>>715583593
Gacha games often have multiple versions of the game's characters rollable in the gacha. You may call them alts, units or whatever you wish. They genetally have at least slightly different stats, skills etc. Oftentimes there may also be separate character skins that can only be bought with money.
>>715583951
I saw someone say that this game doesn't do limited characters and that every released character, even seasonal ones (Christmas etc.) is forever in the gacha. Correct me if I'm wrong.