The New Adventures of Lucky Luke S01 E43 The Revenge of the Daltons

Lucky Luke catches traveling performer Otto abusing his hypnotizer skill for theft. He's jailed with the Daltons, who convince him to escape together, form a robbery gang and take revenge on Lucky. Otto hypnotizes a whole town, but Lucky remembers some cancel and other commands. Otto resorts to hypnotizing his own side, with weird side-effects, and Averill learned the skill.