After Cole Macgrath (inFamous) gains either Kuo or Nix's basic abilities, he can develop and evolve them.
All-For-One (My Hero Academia) can steal the quirks of others, and the stolen quirks can combine and evolve, creating new, unpredictable quirks...
...having inadvertently created One-For-All in the process, a quirk that stockpiles power and becomes stronger with every host.
With the ability that allows him to self-replicate other's powers, John Doe (UnOrdinary) can even combined or evolve these replicated abilities onto an advanced version of its current state.
Fate Graphite (Berserk of Gluttony) possesses a skill known as "Gluttony" a Mortal Sin skill with the ability to steal the skills and stats of person by consuming it's soul. But in exchange for this, the user suffers from a uncontrollable hunger and the only way to ease the pain is to have a constant supply of souls to feed it. With this, he steals away the supernatural abilities of his dead enemies and evolves alongside with it.
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