If you're not caught up by now, the idea behind these infrequent pieces is to discuss ideas for bringing a superhero-inspired Miniature Wargames armies into existing games if your FLGS or local club isn't keen on the genre. Whilst I try to not keep the ideas focused on any specific game or set of rules, I do have a vague idea of something along the lines of Warhammer 40,000 in mind, at least in terms of army size and variety of units.
The Brotherhood (Marvel)
Red Ribbon (Dragon Ball)
Army Building: The spread of troop types and characters means you can never really run out of ideas on this one. You can have plenty of Red Ribbon soldiers, tanks and planes to fill out the rank and file, of course, but do you need an elite unit? How about robots, or maybe ninjas? An elite assassin? Tau Pi-Pi is ready to go. Hell, there's even the Androids and Cell if you need something of an otherworldly power scale. For this concept, I'd probably be working backwards, deciding on a game and army, then finding stuff in the Red Ribbon catalog to fit.
Models: Sadly, the amount of Dragon Ball miniatures on the market is rather low, but don't give up before you start. Most of the major characters can be found as a 3D print, and there is a great line of model vehicles that vary in scale from 28 to 40mm for pretty cheap. For the soldiers, there are plenty of lines of Cold War Chinese and Soviets that fit the bill quite well, and scale alright with some of the Girls Und Panzer tank models that are a bit more rounded and "cute" in style, for that Anime look.
Free Armies of Mongo (Flash Gordon)
Models: There are plenty of "Not-Flash Gordon" miniatures available with a quick search online, I own some from Reaper and Dirk Garrison myself and they suit fine. Bringing together several different ranges may be necessary, depending on how big you want your army to be. The rocket ships may be a little harder to get, but I've seen a few good 3D print examples around with a good "retro" vibe.
Army Building: I'd by lying if I said I hadn't been considering putting together a Foot Clan force for my wargames club's Samurai League, but I thought better of it. The Foot just kind of work really well for a lot of games, because you can have as many ninja as you want or need, then just add in whatever else is required for elite units and characters. Personally, I'd be using a mixture of elements from different incarnations of the Foot, from Rock Soldiers and Krang to Karai and Mousers, because that would give me more variety and more options to choose from.
Models: There are plenty of Ninja models avaiable, which should fill out whatever you need in terms of "squads"; even the TMNT Heroclix Foot Clan Ninjas are pretty nice, though the weapons can be warped and often need replacing. Naturally, Heroclix have all of the characters you'll need, most are pretty affordable on the secondary market as well, but there is the IDW Board Game if you're one of those people who cannot abide Clix. Mantic does a great tunneling vehicle in the Warpath range too.