I don't have any angel characters.

[quote=HylianRose]
o-o'Why does everyone give their character a katana? There are other swords...
[/quote]

I go with katanas without exception for a number of reasons.

1) Katanas are beautiful. I don't find straight swords nice to look at unless the hilt is really ornate, and honestly I don't find European curved swords good to look at either.
2) Katanas are generally fast, agile and precise. That's what I like. I know there are straight swords that can be, but when I think of straight swords I think of big, burly broadswords wielded by tank-type users. When considering a character of that type I generally prefer massive staffs to swords, so there isn't really a situation where I'd use a broadsword.
3) I love everything Japanese. When making Vikki I actually looked up different Japanese swords to use in place of a katana but didn't find any I liked as much.