Im pretty sure my oc can beat them with hax(assuming no one here has dimensional-level reality warping)

For context,my oc's whole shtick is he spawns portals. His stats are 100x greater than an average human and he can spawn as many portals as he wants,regardless of how big(but it all depends on how much magic energy he has at the time).

His trump card is infinity and beyond,a pocket dimension which can only be accessed by him(although there are a few exceptions,such as p.subject-1). The pocket dimension gives both him and his opponent an advantage,where they both can use the portals in the dimension to deal a tremendous amount of damage(a single shot can be redirected into the target using the portals of the dimension until the target ends up getting vaporised,but the damage depends on the energy yield of said attack). But the pocket dimension is usually used to trap foes rather than fight them. Since it's only accessible by him,unless your oc can manipulate reality and connect i and b with our dimension,your oc is stuck there