Checked against the official Gakuran Trello and official public links on July 7, 2026.

JUMP MATRIX:

Character Stats Overview

These core attributes define your avatar's profile. Attributes marked with Gameplay Impact directly modify combat stats like health, damage, and recovery speeds.

Profile / Cosmetic

Gender

Character creation lets you choose Male or Female. Gender affects the eligible hair IDs, face IDs, and the demographic height tables.

  • Female bodies are 10% slimmer.
  • Gender-specific pools apply to hair and face generation.
Gameplay Impact

Height

Height affects gameplay stats and is generated around different averages for each ethnicity and gender.

  • Taller characters gain more damage, health, and hitbox size.
  • Shorter characters gain faster attack speed and faster combo reset timing.
  • Heights cluster around the average for the rolled demographic group.
Gameplay Impact

Ethnicity

The population is heavily weighted toward Japanese characters. Japanese has a 95% roll chance and all other ethnicities share the remaining 5%.

  • Other available ethnicities are European, African, Middle Eastern, Latino, and Indian.
  • Ethnicity influences height generation and natural hair color pools.
Profile / Cosmetic

Age, Birthday, and Grade

Age, birthday, and grade are generated automatically and do not affect gameplay.

  • Students can roll First Year, Second Year, or Third Year.
Profile / Cosmetic

First and Last Names

First names are chosen and rerolled by players. Last names come from in-game preset lists tied to ethnicity.

  • First names must be 3 to 12 characters.
  • There are 4,428 preset last names across the listed ethnicities.
Profile / Cosmetic

Hair

Hair is randomly selected from the gender-and-ethnicity pool for the generated character, unless the player changes it during customization.

  • There are no fixed hairstyle odds beyond the available demographic pool.
  • Ethnicity determines which hairstyle pool is used.
Profile / Cosmetic

Hair Color

Hair color uses ethnicity-based natural color tables, with a 5% chance to roll a dyed color outside that natural set.

  • 95% of rolls use a natural color for that ethnicity.
  • 5% of rolls use a dyed RGB color outside the natural pool.
  • White is listed as an extremely rare dyed result at 0.0001%.
Profile / Cosmetic

Face

Face IDs depend only on gender and are rolled from male or female face pools. Ethnicity does not affect face rolls.

  • There is a 1% chance to roll a special mogger face.
  • The normal face pool accounts for the remaining 99% of rolls.

Demographic Height Averages

The official Height card says rolls cluster around demographic averages instead of forcing a fixed height. The tables below follow the owner-listed averages from tallest to shortest.

Male Demographic Averages

Ethnicity Average Height
European
178 cm (5'10")
African
175 cm (5'9")
Middle Eastern
173 cm (5'8")
Japanese
171 cm (5'7")
Latino
170 cm (5'7")
Indian
167 cm (5'6")

Female Demographic Averages

Ethnicity Average Height
European
165 cm (5'5")
African
162 cm (5'4")
Middle Eastern
160 cm (5'3")
Japanese
159 cm (5'3")
Latino
158 cm (5'2")
Indian
155 cm (5'1")

Official Reroll Rules

Reroll mechanics are strictly mapped from official Trello resources. Use public codes or in-game currencies to adjust your profile.

RULE 01

Keep the Roll or Adjust It

Official guidance frames the starting roll as inspiration, not a restriction. You can keep the generated character exactly as rolled or change targeted traits.

RULE 02

Reroll Targets

The official How To Play card calls out ethnicity rerolls and height adjustment directly, while the names and appearance cards confirm that players can change or customize those presentation traits.