Sinnoh is a hyper and happy girl. She constantly craves adventure and travel and grows anxious and depressed if not exposed to new stimuli quick enough. Her attention span is short and she often gets bored of things quickly after the initial excitement of introducing them.

She tackles her problems head on and is honest and often hasty. She fears that her life is too short and does not wish to waste any time sitting around. She is very loving and friendly but often has trust problems and holds grudges for a while if mistreated. Regardless, she is extremely loyal and would gladly lay down her life in honor of a friend.

Sinnoh loves food and as a result has a bit of chub packed in the belly. She has very long hair, especially in the cheeks and butt, and has bright, intelligent eyes. Her ears almost always slightly flop to the side.