The I-Screamer is a character that appeared in the Cars Toons: Mater's Tall Tales episode Monster Truck Mater. He is an ice cream truck with big wheel and the first opponent that Mater faces. Mater pretends to be a customer wanting some ice cream, but when the I-Screamer is about to give him some, Mater uses his tow hook to topple him over and beating him. He did not appear in any other episodes.