I once made a cat called Twinstar because, well, it sounded cool. But when I wanted to use him in a group where I could not be leader I was stuck. I had to change how he looked and call him Twinstripe and that still doesn't make sense to me. Plus why would Riverpath, his mother, call him Twinkit? He isn't a twin to any cat! Ugh!
What I really wont like is when people are called Coldstar or something and their clan is called ColdClan. True all the clans in the book where named after their first leaders, Thunder, Wind, Shadow, River and Sky, but I don't really like it.