Recently on ebay I came across another person who use to work on the thundercats tv show. This person (who’s name I don’t know yet) was an art director and character designer for episodes, 96 to 130.
I sent him an email in hopes to find more information out. Pretty awesome if you ask me!
mike
Here are a few pics of his work
http://i10.ebayimg.com/01/i/001/30/7d/18fd_1.JPG
http://i18.ebayimg.com/03/i/001/30/7f/570e_1.JPG
It’s Dennis J. Woodyard. In addition to being a character designer, he also wrote Well of Doubt and Shadowmaster. He usually posts animation cels on ebay (user id dflyent), but these are the first character sketches I’ve seen. Very cool!
“Shadowmaster” is my favorite episode of the two. You get to see Lion-O’s father Claudus as a young adult ThunderCat. “Well of Doubt” was okay, but could have been better. 
Fantastic! It looks like Mr. Woodyard designed the “Two-Time” character from the 5-part “Return to Thundera” story! I liked that character; he was one of the genuinely creepier ones. 
I know this is an older thread, but have the pics been taken down? I can’t see them.