My take:
Tie-die has a signature of strangling people with a colorful scarf (sometimes having the person colored as if they were dipped in some rainbowy paint). Her easy-going, fun-filled manners and dancing lull anyone into a groovy complacency that allows her to get close for the kill. She is the ELE's assassin.
Prof. Normal (once a college professor) blends in well in crowds despite the obvious apparatus on his face. He is able to talk about any subject for 5 seconds before people either lose interest and daydream helplessly or fall asleep. The apparatus can also remove the safety goggles from his face allowing him to stare at you, making you feel like he just caught you cheating in Graduate School. (In the USA, that's serious stuff. It can end your graduate career permanently.) Against Prof. Normal, you always get a failing grade.
Fury Leika (left at altar) has a horrible agonizing cry that creates a shockwave storm. She can also %*$#@-slap anyone into next week (and can go quite berserk while doing that). Her overbearing nature makes even the stout-hearted falter. She carries a bouquet that causes all women to try to catch (and it explodes obviously) as well as wears a garter that all men will try to catch (and it explodes obviously). (Catching the bride's bouquet and garter are marriage traditions common in the USA and elsewhere.)
Fake Thomas Jefferson is a jack of all trades: horticulturist, statesman, architect, archaeologist, paleontologist, author, inventor and more. While obviously intelligent, he's not exactly the best military strategist/logician. However, he is the ELE's unbeatable legal representative (which has kept them out of prison — one of the perks of being part of the ELE). He can incite people to rebel violently against whatever authority is present, causing mass chaos. Despite being a well-known member of the ELE, he's always invited to any social gathering as a guest of honor. He is the ELE's PR guy.
Bad Horse has, of course, his "Death Whinney" signature. It causes dread. He's super strong, able to charge through or leap over pretty much any obstacle. (This has caused some people to think he can fly.) His kicks cannot be stopped. As the alpha-stud of any herd, he can rally a stampede in almost any situation, guided by his will alone. 50 men in tanks once tried to rope him, only to be dragged to their deaths (tanks included). By himself, he was able to draw and quarter the overmuscular, supervillain Mr. Steroid (simply because Mr. Steroid had one of his mood-swings and slapped Bad Horse on the rear). Since then, none of the ELE ever dare challenge him. All wranglers that have tried to tame him end up dead or tamed themselves. Those that live serve as his lackeys. The list of his crimes goes on forever. Thanks to FTJ's legal counsel, Bad Horse cannot be charged with any of them (since he is a horse after all).
I'm going to have to go with SuperBunny on Dead Bowie since I have no clue what even David Bowie could do that might be considered as "evil"… except I might add that he's also confusing as hell at times.
Snake bite is an excellent swimmer and able to get into tight spaces. She's the ELE's infiltration specialist. Her lightning-fast reflexes make her formidable even against most super-strength opponents. While poison and snake-charming is one of her trademarks, she has also been attributed to people being crushed to death somehow. There is the rumor that she is also able to swallow people whole.
Dr. Horrible is the ELE's technical specialist. His ability with invention surpassses even FTJ. He provides the ELE with all the weapons and tools to accomplish any mission. Some of his greater works are too Horrible to repeat for they are truly remorseless, but one of his lesser works is a device that can slowly microwave a specific target, even in a crowd. He even fitted it so that Bad Horse can use it. The ELE's arsenal has been complete since his acceptance into the ELE. Many of the devices are far too complex for the other ELE members, but he's more than capable of being the handler of those devices.
What the ELE needs: A strategist, a mastermind, a telepath, a master of disguise and a "connections" guy.
Thomas Jefferson was not the best strategist, sadly. The British sacked the town he was governing many times. Bad Horse relies on brute force. They don't have anyone who can connect to members inside other organizations. Spying or being popular is one thing, but knowing who to contact and how to talk to them is a totally different thing. I can't see Dead Bowie being any of those things. I figure a telepath would be the best "go-to" guy and mastermind, but not willing to challenge Bad Horse, It wouldn't be tactically beneficial since everyone wants to "cut off the head". Let the unbeatable hulk think he's the leader and have everyone target him since he can take the hits.
Heh. With all this analysis of their strengths and weaknesses, maybe I should be the strategist. I'd rather be the master of disguise. Maybe I could be both? (I can't see Bad Horse as being the mastermind.)