Introduction
In Grand Alfheim, your character’s Height and Weight are far more than cosmetic choices. They directly determine your core stats — specifically Speed and HP — and can make or break your build. Whether you’re a nimble Cait Sith assassin darting through the PvP arena or a tanky Gnome guardian absorbing hits under the Yggdrasil World Tree, understanding how to reroll these attributes is essential for stat optimization.
This guide covers everything you need to know about the Height and Weight reroll system, the Speed vs HP trade-off, and how to target your ideal stat spread for any of the 9 fairy races and 11 weapon classes. We’ll walk through reroll currencies, stat formulas, race-specific breakpoints, and build recommendations so you can maximize your combat effectiveness without wasting resources.
Understanding Height and Weight Mechanics
How Height and Weight Are Determined
When you first create your character in Grand Alfheim, Height and Weight are randomly assigned within race-specific ranges. Each of the 9 fairy races — from the towering Gnomes to the diminutive Leprechauns — has a unique baseline range. For example:
- Gnome: Height range 180–210 cm, Weight range 80–120 kg
- Leprechaun: Height range 130–160 cm, Weight range 35–55 kg
- Sylph: Height range 155–185 cm, Weight range 45–75 kg
These values are not arbitrary. Height governs your base Speed stat, while Weight determines your base HP. The game uses the following formulas:
- Speed = 100 + (Height - Race Average Height) × 0.5
- HP = 100 + (Weight - Race Average Weight) × 1.2
This means a taller character gains Speed at the cost of potential HP, while a heavier character sacrifices Speed for survivability. The correlation is inverse — you cannot maximize both simultaneously. This is the core tension of the Speed vs HP dilemma.
Why Reroll Matters for Stat Optimization
Rerolling Height and Weight allows you to fine-tune these base stats before factoring in equipment, skills, and race bonuses. Since you can’t change your race after creation without a rare Race Change Ticket, getting your Height and Weight right from the start is critical. A poorly optimized roll can leave you with 5–10% less Speed or HP than a perfectly min-maxed character of the same level — a gap that widens in competitive PvP and high-tier Yggdrasil raids.
The reroll system uses a special currency called Fairy Dust, earned through daily quests, arena wins, and dismantling duplicate cosmetic items. You can also purchase Fairy Dust with Robux, but free-to-play players can accumulate enough for several rerolls by completing the Fairy Race Quests and participating in the Weekly Arena Rankings.
Reroll System and Currency
How to Access the Reroll Interface
The Height and Weight reroll NPC is located in the central hub of Alfheim City, near the Yggdrasil World Tree portal. Look for Rina the Scale Keeper, an NPC marked with a balance-scale icon on your minimap. Interacting with her opens the attribute adjustment menu, where you can choose to reroll Height, Weight, or both simultaneously.
The cost structure is as follows:
| Reroll Type | Fairy Dust Cost | Notes |
|---|---|---|
| Height Only | 50 | Rerolls only Height within race range, Weight unchanged |
| Weight Only | 50 | Rerolls only Weight within race range, Height unchanged |
| Both (Full Reroll) | 80 | Rerolls both Height and Weight simultaneously |
There is no pity system or guaranteed outcome. Each reroll is independent, so it’s possible to spend hundreds of Fairy Dust without hitting your desired stats. This makes strategic planning essential before you start rolling.
Fairy Dust Farming Methods
Efficient Fairy Dust farming is key to successful rerolling. Here are the most reliable sources:
- Daily Quests: 5–15 Fairy Dust per day depending on quest difficulty.
- Arena Wins: 3–5 Fairy Dust per win, with bonuses during ranked seasons.
- Yggdrasil Floor Bosses: 10–20 Fairy Dust per boss, weekly lockout.
- Dismantling Duplicates: 5–10 Fairy Dust per cosmetic item dismantled.
- Event Participation: Seasonal events often reward 50–100 Fairy Dust.
For a detailed breakdown of daily farming routes, see our Fairy Dust Farming Guide. Free-to-play players can typically earn 200–300 Fairy Dust per week with dedicated play.
Speed vs HP: The Core Trade-off
Understanding the Speed Formula
Speed in Grand Alfheim affects your movement speed, attack speed, and skill animation speed. For every point of Height above your race’s average, you gain 0.5 Speed. Conversely, falling below average reduces your Speed. Speed is a multiplicative stat — it stacks with gear bonuses and buffs, making it one of the most impactful stats for DPS and PvP builds.
| Height Deviation (cm) | Speed Modifier | Example (Race Avg 170 cm) |
|---|---|---|
| -20 | -10 Speed | 150 cm = 90 Speed |
| -10 | -5 Speed | 160 cm = 95 Speed |
| 0 | 100 Speed (base) | 170 cm = 100 Speed |
| +10 | +5 Speed | 180 cm = 105 Speed |
| +20 | +10 Speed | 190 cm = 110 Speed |
Speed caps at 130 base Speed regardless of Height bonuses. Any excess Height beyond the cap threshold provides no additional Speed, making it wasteful. For most races, the effective maximum Height for Speed is approximately 30 cm above average.
Understanding the HP Formula
HP scales with Weight using a 1.2 multiplier per kilogram above your race’s average. This makes Weight rerolls particularly impactful for tank builds, as a 10 kg increase yields 12 additional base HP. Base HP is then multiplied by passive skills and gear bonuses, so those 12 points can become 20–30 effective HP in endgame content.
| Weight Deviation (kg) | HP Modifier | Example (Race Avg 60 kg) |
|---|---|---|
| -20 | -24 HP | 40 kg = 76 HP |
| -10 | -12 HP | 50 kg = 88 HP |
| 0 | 100 HP (base) | 60 kg = 100 HP |
| +10 | +12 HP | 70 kg = 112 HP |
| +20 | +24 HP | 80 kg = 124 HP |
There is no HP cap from Weight alone, but the race’s maximum Weight range naturally limits this. Heavier races like Gnomes can achieve much higher base HP than lighter races like Leprechauns, even with perfect rolls.
The Speed vs HP Paradox
Because Height and Weight are rolled together when using the “Both” option, you often face a trade-off: a tall, light character maximizes Speed but has minimal HP, while a short, heavy character maximizes HP at the cost of Speed. The “ideal” roll depends entirely on your build, but here are general benchmarks:
| Build Archetype | Priority | Target Height | Target Weight | Notes |
|---|---|---|---|---|
| Speed DPS (Cait Sith, Sylph) | Speed | +15 to +25 cm above avg | -10 to -5 kg below avg | Maximize attack speed for combo classes |
| Balanced (Undine, Salamander) | Mixed | 0 to +10 cm above avg | 0 to +5 kg above avg | Versatile for solo and group content |
| Tank (Gnome, Imp) | HP | -5 to -15 cm below avg | +10 to +20 kg above avg | Prioritize survival in raids and PvP |
| Caster (Leprechaun, Spriggan) | Speed (preferred) | +10 to +20 cm above avg | -5 to 0 kg below avg | Kiting and spell animation speed |
Race-Specific Height and Weight Ranges
Base Ranges for All 9 Fairy Races
Each race in Grand Alfheim has a unique Height and Weight range. These ranges are absolute — no amount of rerolling can push your character beyond these limits. Here are the full ranges for all 9 races:
| Race | Height Min (cm) | Height Max (cm) | Weight Min (kg) | Weight Max (kg) | Avg Height (cm) | Avg Weight (kg) |
|---|---|---|---|---|---|---|
| Cait Sith | 140 | 170 | 30 | 50 | 155 | 40 |
| Sylph | 155 | 185 | 45 | 75 | 170 | 60 |
| Undine | 150 | 180 | 40 | 70 | 165 | 55 |
| Salamander | 160 | 190 | 50 | 80 | 175 | 65 |
| Gnome | 180 | 210 | 80 | 120 | 195 | 100 |
| Imp | 145 | 175 | 35 | 65 | 160 | 50 |
| Leprechaun | 130 | 160 | 35 | 55 | 145 | 45 |
| Spriggan | 150 | 180 | 40 | 70 | 165 | 55 |
| Puca | 140 | 170 | 35 | 60 | 155 | 47 |
Optimal Roll Targets Per Race
Based on community testing and meta analysis, here are the recommended reroll targets for each race:
- Cait Sith: Height 165+ cm, Weight 35–40 kg. Maximize Speed for assassin builds. The Cait Sith’s naturally low Weight range means HP will always be low, so lean into Speed.
- Sylph: Height 175+ cm, Weight 50–55 kg. Sylphs benefit from high Speed for their wind magic and dual-wield weapon classes.
- Undine: Height 165–170 cm, Weight 60–65 kg. Balanced stats for healing and support roles.
- Salamander: Height 180+ cm, Weight 55–60 kg. Salamanders have strong offensive magic; prioritize Speed over HP.
- Gnome: Height 185–190 cm, Weight 110–115 kg. Tanks need maximum HP; sacrifice Height for Weight.
- Imp: Height 170+ cm, Weight 40–45 kg. Imps rely on flight speed and dark magic; Speed is king.
- Leprechaun: Height 155+ cm, Weight 35–40 kg. Crafters and ranged DPS need Speed for kiting.
- Spriggan: Height 170–175 cm, Weight 50–55 kg. Treasure hunters benefit from balanced stats.
- Puca: Height 160–165 cm, Weight 40–45 kg. Support bards need survivability, so slight HP bias.
For a deeper dive into race synergies with weapon classes, check the Race and Class Synergy Guide.
Advanced Reroll Strategy
Probability and Expected Costs
Because Height and Weight are rolled uniformly within their ranges, the probability of hitting a specific combination can be calculated. For a Gnome with a Height range of 30 cm and a Weight range of 40 kg, there are 30 × 40 = 1,200 possible outcomes if both are rerolled. If your target is a 5 cm Height window and a 5 kg Weight window, that’s 25 desired outcomes out of 1,200 — a 2.08% chance per reroll.
On average, you’d need 48 rerolls to hit that target. At 80 Fairy Dust per full reroll, that’s 3,840 Fairy Dust. With optimal farming of 300 per week, that’s nearly 13 weeks of saving. This is why many players use the “Height Only” or “Weight Only” rerolls to lock in one stat first, then fine-tune the other.
| Strategy | Average Rerolls Needed | Average Fairy Dust Cost | Time to Farm (300/week) |
|---|---|---|---|
| Full Reroll (Both) | 48 | 3,840 | 12.8 weeks |
| Height First, Then Weight | 15 + 15 = 30 | 1,500 + 750 = 2,250 | 7.5 weeks |
| Weight First, Then Height | 20 + 15 = 35 | 1,000 + 750 = 1,750 | 5.8 weeks |
The most efficient method is to lock in one stat through single-attribute rerolls before addressing the other. Weight-first is often cheaper because Weight ranges are usually narrower than Height ranges, meaning fewer rerolls to hit your target.
Speed vs HP for PvP Arena Builds
In the PvP arena, Speed is generally considered superior due to the importance of movement and attack speed. A character with 10% higher Speed can kite, dodge, and execute combos faster than their opponent. However, in team-based arena modes, tanks with high HP can hold objectives and absorb burst damage for their squishier teammates.
The meta currently favors Speed-oriented builds for solo queue and HP-oriented builds for coordinated team play. The PvP Arena Tier List updates monthly with the latest rankings.
Speed vs HP for Yggdrasil World Tree Raids
Raid content in the Yggdrasil World Tree demands survivability. Bosses hit hard, and mechanics often require soaking unavoidable damage. Here, HP is valued higher than Speed for all roles except dedicated DPS, who can rely on healers. A tank Gnome with maximum HP can survive mechanics that would one-shot a Speed-focused character.
However, DPS checks on higher floors require sufficient Speed to meet enrage timers. The community consensus is to aim for enough HP to survive key mechanics, then invest the rest into Speed. For floor 75+ content, 120+ base HP is recommended for non-tank roles.
FAQ
How do I reroll my Height and Weight in Grand Alfheim?
Visit Rina the Scale Keeper in Alfheim City. You can choose to reroll Height only (50 Fairy Dust), Weight only (50 Fairy Dust), or both simultaneously (80 Fairy Dust). Each reroll randomly reassigns the chosen attributes within your race’s range. There is no way to directly set your stats — you must rely on RNG.
What is better for a beginner: Speed or HP?
For new players, a balanced approach is recommended. Aim for Height and Weight within 5 points of your race’s average. This gives you a solid foundation to learn mechanics without being too squishy or too slow. As you gain experience and understand your preferred playstyle, you can invest in specialized rerolls. The Beginner’s Guide to Grand Alfheim offers more tips for new fairies.
Can I change my race after rerolling Height and Weight?
Yes, but it’s expensive. Race Change Tickets are available in the cash shop for 500 Robux or rarely from event rewards. When you change race, your Height and Weight are randomly reassigned within the new race’s range — you cannot keep your previous stats. Plan your race and rerolls together to avoid wasted resources.
Does Speed affect flight speed in Grand Alfheim?
Yes, Speed directly affects flight speed, making it a critical stat for races with flight-based abilities like Sylphs and Imps. Higher Speed means faster aerial movement and quicker altitude changes, which is vital for dodging mechanics in Yggdrasil raids and PvP skirmishes. For more on flight mechanics, see our Flight and Movement Guide.
Is there a way to guarantee a perfect roll?
No, all rerolls are pure RNG. However, you can improve your odds by using single-attribute rerolls to lock in one stat before addressing the other, as explained in the Advanced Reroll Strategy section. There is no pity timer or cumulative increase in odds. External tools like the community-made Grand Alfheim Reroll Calculator can help you estimate costs and probabilities.