Reader Rabbit is the protagonist of all the games. He was a greyish blue rabbit. In Reader rabbit Math Adventures Ages 6-9, when the Sealion is wrecked, he has a plan to fix it while Sam the Lion was on a search for parts. In the 1986-1993 games, he wears a red t-shirt rather than his trademark red sweater. In the 2000s games, he wears a red sweater and blue jeans and in the 1996-present games he wears a red and blue striped sweater. He also appears in the Stage Show activity of Reader Rabbit Toddler.
Also, Reader Rabbit is the titular character of the series.