Conehead

Conehead is a tongue-in-cheek fan term for the Seekers that were released in 1985- Thrust, Dirge and Ramjet Their distinctive transformation leaves the jet nosecone pointing up, hence the nickname. The animation models for the Conehead Seekers were designed by Floro Dery, whereas the season one Seekers were done primarily by an unknown designer in Japan. The name "Conehead" is taken from an early "Saturday Night Live" sketch about a family of pointy-headed aliens.

From Teletraan I: The Transformers Wiki, a Wikia wiki.