<Ul> <Li> Mrs. Agnes Johnson (voiced by Susanne Blakeslee)--Lincoln and Clyde's teacher at Royal Woods Elementary . </Li> </Ul> <Li> Mrs. Agnes Johnson (voiced by Susanne Blakeslee)--Lincoln and Clyde's teacher at Royal Woods Elementary . </Li> <Ul> <Li> Albert "Pop Pop" (voiced by Fred Willard)--Rita's father, Ruth's brother, and the kids' grandfather who is a former army soldier . </Li> </Ul> <Li> Albert "Pop Pop" (voiced by Fred Willard)--Rita's father, Ruth's brother, and the kids' grandfather who is a former army soldier . </Li>

Who voices pop pop in the loud house