A very old character and originally one of the two I used as a fursona.

Isanji is the biological father of Rivers, and the twin brother of Momoki. To make things quick and short his in-story background is;

-Genetically engineered magical being, thing.
-Ageless Sorcerer
-Not actually a tiger, just looks like one because plot device.
-Mentally unstable
-One man army, literally.
-I made him as a coping mechanism to a bad break-up when I was younger, he's the result of a lot of pent up anger and frustration.
-He always smiles.
-Incredibly complex in terms of character.
-Basically listen to My Chemical Romance and you'll get a feel for his personality.
-Vicious