The character is apparently Tsunami, Guardian of 
the Light.  I haven't seen the show, but this info 
is from my cohort, the Celtyrant, who has seen it.

She also has one of the aforementioned 
rare-as-heck cels, which can be seen near the 
bottom of her "misc. series" page:

http://www.celmansion.com/ballroom/vampire.htm

Mmmmmmmm, don't you just want to tie him up and 
take him home?  ;)