Bookbear is an MG who is an analyst. She helps Mai unlock her signature. She looks and sounds very young (about 13). What her actual age is we do not know, however she is still living with her parents and does what her mom says, so it is likely she is not much older than that.
First appearance: ch .36
Color: White
Level: Unknown, but Bookbear is “one of Arcadia’s highest-level support Magical Girls who focuses on information gathering and analysis.” (ch. 36)
How high a level that is, we don't know.
Yuki is a very large, very soft polar bear, who caries Bookbear around.