[Kanon]

Spoiler for 31:

Paradox is definitely awesome. She has two personalities: one overflowing with love and the other overflowing with hatred. The good personality was quite lovely, she kept trying to convince Ryuho (whom she loves) to surrender to Mars so everybody could live happily. She was saved by Shiryu when she was a kid and has admired him since then. She serves Mars because he promised her he would heal Shiryu. She hates Shunrei for stealing her beloved Shiryu (even though she was there first) and decided she'll have Ryuho instead

So in short, she's pretty yandere.