I think most of his character props go unused. And for the "helmet" and "visor" meshes, the textures make them look like they have a problem, but in a gameplay video (on youtube by rrvirus at timestamp 34:07) there's a bug where all the props were shown on him with those meshes having the same issue, meaning it's like that in-game.

Models & Textures ripped with AssetStudioMod

Asset: Mecha Elmo
Game: Sesame Street Mecha Builders
Console: Mobile
To be hosted on: The Models Resource

Ripped by Somwonere, credit not needed but appreciated.