Ripoff of Godzilla
A Button Special: Earthquake
Super Geon jumps off-screen into the air, then lands on the ground, knocking down the enemy.
B Button Special: Flame Breath
Super Geon spits fire from his mouth which travels across the ground, making its way across the screen.
C Button Special: Iron Horn
Super Geon rips a horn off his head which becomes a weapon you can either smack enemies with (press Punch) or throw (press Kick). Getting hit or jumping destroys it.
The Godzilla rip-off is back, sporting a new dragon-like look (which, apparently, was the result of feasting on the meat of his enemies), and he's a real mixed bag. Not only is he the slowest of the available characters, but so are his attacks- while his Kick is almost useful given that it's got the best range of any standard attack, you can also make a cup of tea and a few rounds of toast before even gets close to hitting your opponent. However! Super Geon has the absurdly broken Earthquake Special- 9 times out of 10, the enemy won't actually dodge it. The only boss who's good at dodging it is Clawhead, and Aqua Slug and Lavicus are invulnerable against it. Even so, if you really, really want to beat this game that badly, you could just keep doing this over and over. Unfortunately, when he's not Earthquaking the enemy, Geon has almost nothing going for him. So, paradoxically, Super Geon is technically the best character, but he's so fucking boring to play as. Just don't do it.
Ripoff of Ultraman
A Button Special: Atomic Thunder
Atomic Guy poses and the enemy is instantly struck by lightning, no matter where they are on screen.
B Button Special: Ego Attack
Atomic Guy fires out a gigantic face projectile in his own image.
C Button Special: Mohawk Chop
Atomic Guy rips off his mohawk and throws it at the enemy. If it hits, it'll stun then for a while.
After taking a year out eating radioactive waste to bulk up (and, it seems, grow a mohawk), Atomic Guy is here to take names and hand out punishments. He does so with authority because, unlike Super Geon, he's actually fun to play as. His attacks are quick and don't take several centuries to come out, two of his Special attacks are projectiles and they're extremely useful when you can use them (the other is a hit-you-anywhere-on-screen attack that simply won't work on the CPU more than once, maybe twice per battle... Unless you exploit it the right way, as you will see) and above all, he's fast. Considering that all the enemy aliens are going to be faster than you anyway, being nimble on your feet is just as important as strength, and so this is a Good Thing. Additionally, Atomic Guy's kick is lightning-fast and perfect for hitting enemies while they're down. Finally, he has a most righteous name.
Ripoff of King Kong
A Button Special: Split Attack
Cyber Woo's body detaches from his legs and starts floating as his legs jump around. You can use a spin attack by pressing Punch before the two parts meet up and become whole again.
B Button Special: Blitz Cannon
Cyber Woo transforms into a cannon and fires a ball of energy.
C Button Special: Hand Missile
Cyber Woo launches his hands out. If they connect, they'll grab the enemy and explode.
Woo was nearly killed at the end of the last game, so the Japanese government took his brain and implanted it into a new cybernetic body. When he found out he'd been exploited, the new Cyber Woo destroyed the lab that created him and decided to take on the evil aliens. He's no Atomic Guy, but he's not as mind-numbingly boring as Super Geon. Cyber Woo's main advantage- and what makes him different- is that rather strange Split Attack. It sounds rubbish- you only have one attack while you're doing it, your legs will pick up items for you (including Power-Downs!) and you can still be hurt. However, you can't be knocked down, and you can't be grappled. This is a Good Thing, you just need to make sure you're nowhere near the enemy when you reform, and that you only split up when you've got the opportunity. Also, his attacks have better range than Atomic Guy. Unfortunately, Cyber Woo is the weakest of the three characters, which really hurts his usefulness. If you can learn to get into the pattern of splitting up effectively, though, Cyber Woo might be a good bet.