[Omnikaiser]

If Build was very W + OOO, I feel like Zero-One is Build/Gaim + OOO.

possibly lot of riders.
The mammoth mech is kinda like Suika Arms.
The scorpion weapon really gives transteam-gun vibes from Build as well. and phone-bike is literally Build.

EDIT :

Judging from the faces, Punching Kong seem to be used by Vulcan and Lightning Hornet by Valkyrie ? Can't say for the others. probably Zero-One as he should have most of them.