So tonight I decided to finally do Cyclops's "Punchclops" achievement (defeat 1963 enemies with Punch Combo as finishing blow.) I'd been putting it off because, why would I have Punch Combo as part of my build? So I knew I'd need to do a respec. I went ahead and made a "can't miss" build -- that is, his ONLY attack was Punch Combo (which I set for both mouse buttons just so no matter what I did, it was Punch Combo) otherwise it was all passives. I just ran him through terms for cube shards (swapping to my main for the bosses, since he can one-shot'em and why waste any more time than necessary, I figured.) Anyway, it was a whole lot of fun, much to my surprise. I had done something similar for Captain Marvel to get her "kill mercenaries with melee in Task term" achieve but that had to be done in Cosmic, so it was still kind of a drag. But for some reason, watching Cyclops basically kung fu his way through oncoming enemies really entertained me and I was able to finish the achievement pretty quickly. Obviously, Punchclops would be useless in high end/grouped content but given that mine has full 69 gear and max Omegas, he was never in any real danger in green and red terms (and on the rare occasions when things did get a little hairy -- mostly in red AIM -- he just hopped on his motorcycle and sped away, which also entertained me more than it should have.) The only way it would have been more fun, I reckon, is if he had a Shang-Chi costume.
So that brings me to the real point of this thread: Have any of you ever made a build you knew was dopey but ended up being pretty fun anyway?