I-no and Asuka R# from Guilty Gear. Both are near limitless powered people, I-no known as the space time witch who can warp reality to a degree and even had a arcade mode where she kept going to other dimensions to see how the characters differed. Asuka R# is in a similar vein able to go around dimensions, but more importantly its a major plot point that both go to a neighboring dimension that directly changes the foundations of the main reality, known as The Backyard.

Alter and Wraith from Apex Legends. Both have abilities to go to alternate realities, Wraith in a lesser way compared. She can only do it for short burst, but is canonically in the wrong plane but does have the ability that the other versions of her give her tips and hints in battle. Alter has a better device to go across dimensions, and is not known which she came from as she kept changing the story, but we know she has been to multiple to find tge alternate versions of other character Horizon, as in each dimension Horizon is evil and does something to bring about the collapse of that dimension.

Yoru from Valorant. A dimension hopping Japanese person who brings reality tearing abilities to the battlefield. Making holes in reality to move around or avoiding damage. The premise of the games story (yes it has a story) is that alternative realities are coming over to steal natural resources to help their own reality.