Before I do that let me just inform you about something.

Professor Membrane has a twin Brother called Jackie Chan and yes Membrane is also a member of the family Chan Clan so, Dib and Gus are Chan's last names so that's it.

Season 1;

Cik

Commander Mux

Tak

Kai

Rio

Tik and Tok

Season 2;

Quo

Sterling

Nuic

Byr

Zek

Rue

Nevis

Ceri

The quick explanation before during the time the Menbrane family moved to Chicago to be neighbors with Chan and to start a reunion family while Zim followed them but they didn't know what changes and adventures they had.