Beast vs Blanka
Two beastmen flipped and swung through an abandoned construction site deep in the heart of Metro City, exchanging blow after blow. Their mingled roars rang out, although one was a roar of unmitigated delight rather than battle-heat. Beast of the X-Men had finally found Blanka, the Street Fighter.
"Incredible!" he burbled, "When we first encountered your world, we saw there were many non-humans dwelling on it. But never in a million years did we imagine we might find mutants like ourselves! This is truly the discovery of a lifetime."
"Me? Mutant?" Blanka, the Brazilian jungle fighter, sneered at his opponent. "You making fun of me?"
"Not at all! On the contrary, I find you to be quite the scientific marvel. I’d love to examine you if I—Oof!"
Whatever else he'd been about to say was cut off as Blanka rolled at him like a razorblade, faster than even his enhanced reflexes could account for. He was struck in the gut and went flying.
The two men were oddly similar in how they fought. Both could jump and swing about with their muscular, oversized limbs. The most glaring difference between them was their coloration—Blanka had verdant green skin and fiery red hair, while Beast was covered all over in deep blue fur.
Beast recovered quickly by grabbing a nearby girder and swinging himself around it. He gathered himself for a tight leap to the next level of the site, but before he could Blanka appeared behind him. The green-skinned fighter hooted as he grabbed both sides of Beast’s spandex trunks—the only clothing the mutant wore. To Beast's consternation he found himself diving right out of them, leaving his blue-furred self decidedly au naturale as he landed.
"Er, ahem. Perhaps I should concentrate on the fight before enthusing over you quite so strongly," he said with a blush as, down below, Blanka rolled on the ground with laughter. "This should only take a few minutes."
Beast jumped back down, utilizing his patented foot-stomp to pound Blanka into a pile of bricks. That had the overall pleasant side-effect of leaving the Brazilian fighter stunned, laying over them with his rump raised temptingly. Beast hopped over to him and grabbed hold of his khaki shorts.
"Under the circumstances I’d say one good turn deserves another," he told him, dragging them down to reveal two muscular green buttocks. He gave a low whistle. "Incredible," he breathed, "Simply incredible."
From there it was a simple matter to pick Blanka up and secure him over his knee. The Street Fighter looked somehow suitable bent over like that, his bare green buns pressed into the air. Beast began the spanking summarily, laying on good, firm swats. "Forgive me, my friend, but until our teammates are discovered I've been told to spank every one of you Capcom fighters," he told him apologetically as Blanka bucked in place and growled. "Something about a war of attrition."
But even as he laid on the firm swats, his mind was already in the clouds again.
"Enhanced reflexes," he murmured. "Greater strength and speed. Unusual skin—and likely hair—pigmentation. Claws. An overall appearance that could be described as bestial." He shook his head in scientific wonder. "To think, not only have I found a mutant, but one with a mutation is so similar to my own!" His broad hand clapped back and forth across Blanka's upturned cheeks, beating them soundly and making the beastman yowl and squirm across his lap. He pushed an ape-like hand down on Blanka's muscular green back to hold him in place. "There are some minute differences of course—no mutation is ever truly alike—but I wonder if by studying him I might glean some insight into my own situation. And, of course, vice-versa."
"Left... one... out!" Blanka snarled, twisting his bare cheeks with every hard smack they took.
"Hmm? What was that?"
"One... other... thing... I... do!!"
ZZZZZZZZZZZZZZZAP!
Beast suddenly convulsed as 100,000 volts of electricity rang straight through him.
* * * * *
When Beast came to, he found their respective positions reversed. Now he was the one upturned over a brawny knee, and Blanka the one examining his bare, muscular blue bottom. The green beastman poked it curiously with a clawed fingertip.
"Oh, my stars and garters," Beast groaned.
The first swat fell, and stung his cheeks considerably. Others followed, and despite himself Beast was soon squirming like a much younger hero.
"Aah! Oh! Can't we—Ooh!—talk about this, my friend!?"
"No! Now blue science-man find out what it means to lose in jungle!"
"Aaahh! Ohh!" Beast wailed as the spanks only grew harsher. He twisted his hips helplessly under the assault. "I take your point! But still, this is—Ohhh!—fascinating! That magnificent body of yours—Nngh! Somehow, it takes ordinary chemical reactions and then, through some unknown process, converts them to bio-electricity! The closest I've seen to that is the villain Electro who, alas, I've never had the opportunity to study closely. But you! You are—aaahhh!"
He bucked and yowled, blue cheeks bouncing harshly under a heavy green palm. It was enough for Blanka to look his victim over in confusion. Even as he was getting his beefy bottom beaten so thoroughly, Beast the X-Man was still theorizing.
Blanka had been the subject of much scientific study and speculation over the years. Scientists from many different countries had poked and prodded at him in labs all over the world. But rarely had his body ever been described as magnificent. 'Freakish' maybe, or, if people were being polite, simply 'abnormal'.
But this strange superhero from another reality, this... Beast, he honestly seemed entranced by him. Delighted by their differences just as much as their similarities.
It was a strange sensation for one so unused to it. Blanka was even slightly uncomfortable at such outright fawning. He growled at that realization. Beast was the one being spanked! He should be the one made uncomfortable!
Suiting deed to thought, he brought his hand down in hard and crisp blows, truly punishing his fellow beastman. Beast howled and lurched, helpless to escape the grip Blanka had on him. His blue-furred buttocks bounced more and more painfully with every hard lick. They twisted as they blushed purple though his fur, then a deeper, more fiery red.
“Ohhh! AAAHH, a-alright! I think I’ve learned my lesson now! P-PLEASE!”
But Blanka ignored him and spanked without mercy, giving only hooting growls in response. Beast squirmed, wailed, and bucked, but could find no escape. His inter-dimensional counterpart was just as strong as himself, perhaps even moreso. In all it took only five minutes to put the X-Man in his place and reduce him to sobs.
When Beast at last fully succumbed to the pain, he was released and fell to the ground. The punished scientist could do nothing but grab his hot ass, tears soaking into his fur. Blanka stood over him with one foot pressed down on his conquered opponent, beating his mighty chest and crowing to celebrate his victory. The thrill of such primal dominance, as ever, gave him unbridled pleasure. He scooped up his shorts and slung them over his shoulder before preparing to depart, leaving Beast sobbing and red-bottomed as he had so many other so-called heroes.
"Blanka... wait," he heard from behind him. He turned in surprise to see Beast still reaching out for him, despite the fact he'd been punished so hard he could barely stand. "After this... conflict between our two groups is over... If you're interested... I know a certain professor who runs an institute," Beast spoke, blinking back tears. "He can... help you. If you let him."
Blanka looked back at his defeated opponent.
"Blanka will... consider," he said, before disappearing into the night with an airborne roll that took him right out of the construction site and back into the urban jungle. He left a naked and defeated Beast behind, rubbing his beaten blue buns and staring after him in wonder.