Steinbeck

Principal Steinbeck is a supporting antagonist in the SML series. He is the cruel, ruthless, intimidating, and somewhat insane principal of Y U DUMB? Elementary School and one of Junior's main arch-enemies and adversaries and arguably his biggest one. He loves it when the students get into trouble so he can punish them. It is unknown why Principal Steinbeck is evil and how he became that way. He is shown to be very abusive, harsh, and mean towards the students indicating that he absolutely hates Junior and his friends much more than any other character in the series, but he appears to be nice and smooth-talking towards other adults, including the teachers. However, now that SML has been family friendly since 2019, many people thought he might not return ever again, which was proven false since he appeared in Cody Goes to College. Principal Steinbeck is a supporting antagonist in the SuperMarioLogan series. He is the main antagonist of the Bowser Junior's Summer School series.