Beast Wars: Transformers (1996)

S3E9 Crossing the Rubicon

Title: Crossing the Rubicon Plot: In a bold move, Blackarachnia tries to activate the transmetal driver on herself, hoping for a transformation. However, the experiment backfires, causing her Predacon programming to destabilize rapidly. If not addressed soon, this malfunction threatens to erase her consciousness entirely, leaving her in a mindless state.