Mouse

Mouse is a G.I. Joe-aligned human from the G.I. Joe vs. the Transformers portion of the Generation 1 continuity family.

You can't see me!

_{This character has no official visual representation in any Transformers product or media... yet, at least.}

Designation Mouse is the computer expert of the Screaming Eagles.

Fiction

TransTech

During the conflict between the Screaming Eagles and S.K.A.R. in Primax 806.30 Gamma, Mouse was binary-bonded to the Autobot Chromedome. Ultimately, the Screaming Eagles emerged victorious, ushering in a new Golden Age for Earth. Andromeda - Axiom Nexus News, 1/5/2016