Tonton Streaming The Powerpuff Girls (1998) S1E5 - Octi Evil

The heinous Him toys with Bubbles' mind by speaking to her through Octi, her favorite stuffed animal. Following Octi/Him's instructions, Bubbles provokes a fight between her sisters that prompts the Professor to issue a time-out until the Girls can make amends and make squid meat out of the giant, Him-controlled Octi.