Current Datamines: (Updated 2025/12/17)

This information is based on data found in MY HERO ULTRA RUMBLE itself. Remember, nothing here is confirmation of anything releasing sooner or later, and is subject to change at any time.
So far datamines from UltraRumble.com have been consistently correct with releases. Things found in the past in previous seasons have in fact released in the following seasons.
(Eg. Twice and All for One found prior in Season 2, released in Season 3/4. Mirio and Dabi's Quirk Set found in Season 4, released/releasing in Season 5.)

Season 14 and Season 15 Release Data

For the first time in a long time they updated the file that contains the next characters in the current season and the following season.
BP_GameModeLobby File Data:
"_newCharacterBeforSeason": [
  "ECharacterId::Ch200",
  "ECharacterId::Ch115"
],
"_newCharacterAfterSeason": [
  "ECharacterId::UNDEF"
]

  • _newCharacterBeforSeason is typically referred to for the Current Season, so in this case Season 14.
  • _newCharacterAfterSeason is typically refferred to the season next, which in this case is Season 15.

    • Season 14 has 2 characters releasing, Ch200 is Armored All Might, Ch115 is Lady Nagant. Season 15 is UNDEF, so we don't know for sure who is in S15. Likely could be Star and Stripe.

    Character IDs

  • Star and Stripe: ECharacterId::Ch114
  • Katsuki Bakugo Quirk Skill Set 2: EVariationCharacterId::Ch002_Variation2

    • These are found within the Object Dump lines.

    New Game Mode Data

    Code Name: SQUAD_KINGS_BATTLE

    Game Mode Name: LEADERS BATTLE

    Description: 仲間と連携しリーダーを守り抜け！ - Work with your friends to protect your leader!

    There are JSON data files as well for this mode similarly to the existing modes that are playable in-game. On 2024-03-27, this data was removed. This data was re-added as of 2024-09-25.

    Game Mode Data Timeline

    Season 1:

  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.SquadKingsBattle",DevComment="")

    • Season 3:

  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.LeaderBattle",DevComment="")

    • Season 5:

  • Removed: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.LeaderBattle",DevComment="")
  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.Domination",DevComment="")
  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.Leaders",DevComment="")
  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.Leaders.BattleRank",DevComment="")
  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.Leaders.Common",DevComment="")
  • Added: GameplayTagList=(Tag="UISubLevel.Battle.HUD.GameMode.Leaders.TeamName",DevComment="")

    • Seems that LeadersBattle was renamed to Leaders. Also added new Leaders sub items. New GameMode Domination added.

    All Future Quirk Sets! Official Translations for Supported Languages! (UPDATED)

    Added to MasterData as of 2024-09-25. Removed from MasterData on 2024-11-20

    Click here to view the detailed X (Twitter) post from HydrosPlays, listing of the Quirk Skill Set (Variations)

    Previously, the quirk set list Hydros found was only in the variants table of the data, which was only given in Japanese. As of 2024-09-25, the variants table data was removed, but all future quirk set releases have been added to the language master data for all supported languages. Hawks and Present Mic quirk sets are also included.

    Note: These are subject to change at any point. The order of these quirk sets is not guaranteed to happen in this order specifically.

    Unreleased Supply Item Icons

    T_ui_HUD_Su013
    T_ui_HUD_Su014

    Unreleased Special TUNING Icons