Mimi

Mimi is Catmint's sister, she is the secondary host of the YouTube webseries Alphabet Attack.

"Climbing Up the Top"
she came to be the co-host of the Alphabet Attack show, J realizes that she's bigger than the rest of the letters, she shrinks because of this, she gets the teams going.

"The Cold Wave"
Mimi plays in the snow.

"Terrible Math Questions"
she tries calming Catmint down.

"A Christmas Special"
She and Catmint sing a Christmas song.

Trivia

 * she is actually Catmint's older sister
 * she is Jacob's wife
 * she looks like Catmint, but she has dark blue clothing and hair.