|First Appearance (Barney and the Rocko Squad)||This is a Blast!|
|Barney and the Rocko Squad Portrayer|| Christian Jacobs (standard)|
Jamieson Price (classic clips)
- "It looks like you've all eaten too much candy! Candy tastes yummy, but it's not good for your bodies to eat too much!"
- — Plex while imitating Heihachi Mishima's voice in a classic Yo Gabba Gabba clip.
Plex is a magic yellow robot. He is portrayed as being smart and as the leader of Gabbaland. Plex usually teaches lessons to his friends and is a father figure to the gang. He can also use his special ray to bring things into existence. He plays the keytar. In his original show, he has no realm in particular, although he seems to have a "docking station" between Foofa and Brobee's realms.
Plex is voiced by Christian Jacobs in Barney and the Rocko Squad, but Jamieson Price, the man who voices Heihachi Mishima in the exact same show, voices Plex in the classic Yo Gabba Gabba! clips.