Mattis T. Monkey

Mattis T. Monkey is Rianna F-Fiona's monkey apprentice.

Bio
Mattis was born when her male counterpart goes to the NEXO Knights world. Mattis was left under Clay's watchful eyes while her master, Rianna F-Fiona, is away fighting Jestro and Morro, before he is reformed, with Ryan and the other NEXO Knights. She kept being cheeky and hid from Clay so he couldn't boss her around. She and Rianna were good friends and heroes to the NEXO Knights and she helped them with some deeds. She refers to Rianna as "Master Rianna".

Trivia

 * Mattis is the apprentice of Rianna F-Fiona
 * Mattis is the twin sister of
 * Mattis is the apprentice of Rianna F-Fiona
 * Mattis is the twin sister of
 * Mattis is the twin sister of
 * Mattis is the twin sister of

Quotes

 * Hello.
 * Oh, why do I always have to stay behind under Clay's watch?
 * Maybe if I hide from Clay he can't boss me around.
 * Thomas is being stolen?!
 * Let me help, Clay. My monkey moves are so good I can be excellent at finding things.
 * Clay, if I know Thomas, he's probably already thought about his escape plan.
 * Come on, we need to hurry and find Thomas.
 * [after seeing Sci-Ryan in his Flutterbat form] That's not Sci-Ryan... that's Sci-Rybat.
 * [sees Clay 2] Are you up for some fighting monsters, Clay?
 * Maybe the swan is the princess named Odette, Master Rianna.
 * Thomas, Clay might be in trouble.
 * Clay, let's just go.
 * Let's see. If Matau's master is a PKE Meter, then where could he be?
 * Thomas, where are you?!
 * Sunburst is Starlight Glimmer in the Genderbent universe?
 * Odette is Rigby's sister?!
 * Let's go find Thomas.
 * Matau? How did you get that arc reactor in your chest?
 * Heh-heh.
 * Come on.
 * Aw. Young love.
 * I may not know who Sunvix is but she is bad news.
 * Let's go. We need to hurry and find Thomas.
 * You look so awesome, Wolfgang.
 * Who is the girlfriend of Ryanset anyway?
 * Who is the girlfriend of Ryanset anyway?
 * Who is the girlfriend of Ryanset anyway?
 * Who is the girlfriend of Ryanset anyway?