By Erin Strecker
June 11, 2013 at 10:00 PM EDT
Ilya S. Savenok/WireImage

Leonardo, Michelangelo, Donatello and…Roseanne Barr?

The actress will guest-star on the season-finale of Teenage Mutant Ninja Turtles, EW has learned. Barr will voice Kraang Prime, the Kraang’s glorious leader from Dimension X, and the first look photo — full of multiple eyes and purple skin — is certainly a bit creepy. But we hear that while Kraang Prime speaks with the familiar Kraang voice, its superior intellect allows it to speak with more inflection and less convoluted phrasing.

Watch an exclusive behind-the-scenes preview of Barr’s debut below:

Teenage Mutant Ninja Turtle‘s season finale with Barr will air on Nick later this summer.

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