Thunder, Thunder, ThunderCats! HOOOOOOOOOOOOO! Those who grew up in the '80s know what's up. Here's a sneak peek at the new ThunderCats cartoon premiering on the Cartoon Network. Warner Bros. debuted the trailer Sunday at WonderCon. Cheetara has extensions and Lion-O looks really young. Actually, they all look really young. Where is Panthro and Snarf? Mumrar looks like his creepy self. I hope the series is good. Watch and tell me what you think.