Don't worry - the UFO-chi is a teen character (definitely) - just like a Ringotchi.
One of the charts has a couple of mistakes in it!
If you want, you could look at these two sites:
Bell Sprout's web site (member of TamaTalk & TamaGuide) has a list of all the V1 and V2 characters / names: https://bellsprout.50webs.com
Rivenn's site (he's a TamaTalk member) - it's called Tamadex - and has a V2 growth chart (still under construction) and a list / pictures of all the V2 characters: