Mokar

　＼从/ 　 ∧＿∧　　／￣￣￣￣￣￣￣　（；ＴДＴ）＜You too!? 　（つ　つ　＼＿＿＿＿＿＿＿　〈　〈＼＼　（＿_）（＿_）

Mokar (モカー) is a sad derivative of Mona that feels like it is always getting picked on. Their catchphrase, "Omae mokar!?" (オマエモカー！？), translates to "You too!?"

Derivatives:

Nokar

　　　＼　|　／　　　― Θ ― 　　　／　°＼　 ∧＿∧　　／￣￣￣￣￣￣￣　（　・∀・）＜　That's right! 　（つ　つ　＼＿＿＿＿＿＿＿　〈　〈＼＼　（＿_）（＿_）

Nokar (ノカー) is Mokar's opposite, who is always positive. They seem to be based off of Moralar.

Sources:

2ch AA Illustration Project
2ch AA Illustration Project (Nokar)