For those who don't know, Pokemon Infinite Fusion is a ROM hack where players can fuse Pokemon. A lot of these fusions are references to other franchises. Considering Pokemon itself was inspired by Ultraman, there's definitely going to be a LOT of kaiju fusions. Recently another Godzilla fusion was added. The following is a screenshot I took in Pokeathlon, a project made by the creators of Pokemon Showdown, to make a battle simulator with fusions.

The Fusion on the left is Zekrom fused with Groudon. It is a reference to Godzilla -1, looks sick. It's also the newest Godzilla fusion. The fusion on the right is Tyranitar and Zekrom, it's a reference to Legendary, both look sick.