Hey...who do u you is a comparable character for YYH? Here are some that i can think of from the top of my head.
i always thought that the fox demon Youko Kurama was a lot like Sesshomaru from InuYasha. They both have long hair just Sesshormaru's is white and Kurama's is silver. Both use a whip...Kurama uses the rose whip while Sesshomaru uses this long yellow string thing that i take for a whip. Both have a cold and ruthless personality and always thinking (calculatin) out an attack. Both deadly fighters and feared by many. But both shows their loving and tenderness from time to time.
Hiei reminds me of Vegeta from Dragon Ball Z. The shape of the hair, the height (not to offend anyone but they are both a bit short...sorry), the short temperedness, egotistic, brute strength and spirit/energy blasts, don't really care about anyone but themselve, loyal
heh...thats about all i can think of...please let me know ur ideas