Great games. Great characters. For some completely subjective reason I really like Trick as a character. I don't know why. Hope she gets referenced more in the future.
Personally, I like their personality. They have such an addictive optimism. Their smile warms you up after a hard day. They're the kind of friend who would invite you over for a hot coco at the end of a long, cold day. Their smile brightens even the darkest rooms, they can make the saddest person happy, and make even the most hateful bunny love them. That is why they are such a great character.
(At least in my opinion)