Or give life to inanimate objects? Was rewatching doom patrol and I really love the concept of bringing imaginary characters like gods/monsters to life being a power or pulling inworld comic book characters off the page and bringing them to life like flex mentallo?
This might not be quite what you mean, but for DC there’s Larfleeze, the Orange Lantern, AKA Agent Orange. His ring operates on the emotion of greed. Because of the nature of greed, he will not let anyone else wield an Orange Lantern ring. This would seem like a disadvantage given that all the other lantern corps have multiple ring bearers, often hundreds to form a corps. In Larfleeze’s case he just made his own corps out of light constructs based on beings he’s killed.
Oh yeah, thats pretty close if the light constructs are sentient and not purely controlled by him subconciously.
For Marvel:
https://marvel.fandom.com/wiki/Category:Summoning
List of characters who can summon beings or objects to aid them, possibly through extra-dimensional or magical means, or through three dimension animation of two dimensional objects (drawings, paintings, tattoos, etc.), or by any other means except telepathy (such as telepathic animal control)
Does this count?