My Powers Are a Bit Much in the Marvel Universe

(You can skip the first world without affecting your reading experience.)

Wang Youcai, a dirt-poor scholar who failed the imperial exam, one day finds a meteorite in his own backyard. From then on, he gains immortality and a transmigration System that he can control freely.

And so the story begins.

Transformers - The Boys - Marvel - DC.

The story begins in Transformers, but the protagonist has already been through worlds such as DC. Later events may be shown in flashbacks as appropriate.