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?
Oh yeah, thats pretty close if the light constructs are sentient and not purely controlled by him subconciously.
They are semi sentient if I recall. Like they have personality traits of the killed people they are based on but he does need to be concentrating somewhat to bring them into existence. But they can go light years away from him