Complex sentence: Mario, Luigi, and Timpani confront Dimentio, who reveals his true intentions to betray Blumiere and anonymously helped the group along, including rescuing Peach and Bowser from Castle Bleck.
Split into simpler sentences: Mario, Luigi, and Timpani confront Dimentio, who reveals his true intentions to betray Blumiere. Dimentio reveals he had anonymously helped the group along, including rescuing Peach and Bowser from Castle Bleck.