Father O'Malley (strangled by "Muscle Chucky") and Trevor (punched/killed by Chucky).
The episode (S02E03) is widely regarded by critics and viewers as one of the series' most "wild and surprising" installments. It famously introduces multiple "variants" of Chucky, including a brainwashed "Good Chucky" and a hyper-muscular "Buff Chucky". Critical Consensus & Highlights Chucky.s02e03.Subbed.ITA.mp4
For a deeper look at the episode's wildest moments and Easter eggs, check out these reviews and breakdowns: Father O'Malley (strangled by "Muscle Chucky") and Trevor