Scalp

Scalp is a Transformer from the 2005 IDW portion of the Generation 1 continuity family.

You can't see me!

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

Scalp is a mnemosurgeon who transforms into a big head, appropriately enough.

Fiction

2005 IDW continuity

Tailgate, who was friends with Scalp six million years ago, brought him up while talking about Chromedome, Brainstorm, and Highbrow's head-themed names. The Reluctant Specialist He later named Scalp and Chromedome as examples of expert mnemosurgeons while protesting that he knew nothing about mnemosurgery. The Lopsided Triangle