I've been giving Kai some more thought (as you do), and perhaps the attraction is that he goes into cold storage when you've finished with him, and stays there until needed. A very attractive quality ;)
And he's steady - no emotional outbursts, matter-of-fact and black-and-white. You know exactly where you stand with Kai - he has no agenda.
[I'm sure I'll get over this little obsession soon, and we can get back to normal random posts ...]