There are dozens of tabletop RPGs that feature mechs and their pilots, perfect for any fans of shows like Mobile Suit Gundam.

Talsorian Games, the publisher behind the Cyberpunk TTRPG ... anime and Cyberpunk 2077, featuring all new maps of Night City, standees featuring new maps, standees, and Cyberpunk Edgerunners ...

The Terraforming Mars TTRPG project, which launched on Backerkit ... you can lovingly craft your player character but (in a way that is bang-on-theme) they are ultimately just a pawn for whatever ...