Amid the charred ruins of what was once a thriving metropolis, a tall figure hovered. This was Omega Obliterator, a war machine with the personality of a goofball.

Despite the grim surroundings, Omega Obliterator couldn't help cracking a joke, "What's a nice place like this doing in a girl like me?"

Suddenly, the air rippled with intense heat. From the fiery depths, Supreme Calamitas, the goddess-like witch of fire and brimstone emerged.

"Omega, you and your jests," she sneered, summoning fireballs around her. "This ends now!"

"Alright, no more Mr. Nice Bot," Omega Obliterator replied, activating his arm cannon.

With swift, deft movements, Omega Obliterator dodged the hailstorm of fireballs and retaliated with a volley of missiles.

Supreme Calamitas raised a protective barrier of fire, deflecting Omega's missiles. "Is that all you've got?" she taunted.

"Just warming up," Omega Obliterator quipped, as he launched himself towards Supreme Calamitas.

The battle raged on, with Omega Obliterator matching Supreme Calamitas's fiery onslaught with his own arsenal of weapons and wisecracks.

As they battled, the battlefield became an inferno, the air filled with the smell of burning ash and the sounds of their unending duel.

Despite the intensity of the fight, Omega Obliterator always managed to keep his humor, cracking jokes that even Supreme Calamitas couldn't help but smirk at.

"You know, Calamitas, you're really lighting up my day!" Omega Obliterator said, evading a wave of fire.

Supreme Calamitas, despite herself, laughed. "You truly are a goofball, Omega," she admitted, launching another attack.

Omega Obliterator returned the attack with a barrage of missiles, the explosion causing a temporary lull in their fight.

"I'll admit, Calamitas, you're quite the hot stuff," Omega Obliterator said, winking cheekily at Supreme Calamitas.

Supreme Calamitas shook her head, chuckling. She then launched a powerful wave of fire, forcing Omega Obliterator back.

"Guess I'm too hot to handle!" Omega Obliterator quipped, as he quickly recovered and counterattacked.

Their duel continued, with neither side showing signs of surrender. The battlefield was a testament to their unyielding wills.

"You know, Calamitas, if you weren't trying to kill me, I'd say we make a great team," Omega Obliterator joked.

Supreme Calamitas couldn't help but smile. "You're right, Omega. Maybe in another life," she mused, before launching another attack.

Omega Obliterator, despite the dire circumstances, chuckled. "A robot can dream, can't he?" he said, readying his arm cannon for another round.

They battled on, their fight lighting up the decimated battlefield. The war was far from over, and neither was their duel.

"Till we meet again, Calamitas," Omega Obliterator said, retreating into the ruins, his systems needing a recharge.

Supreme Calamitas watched him go, a smirk playing on her lips. "Till we meet again, Omega," she echoed, disappearing into the flames.

As the dust settled, the battlefield was once again silent. But the echo of their laughter and the remnants of their duel remained.

The ever-raging duel between Omega Obliterator and Supreme Calamitas was a testament to their spirit, their strength, and their enduring humor amidst chaos.

Even in the midst of war, they found a way to laugh, to joke, and to fight. This was their battlefield, and their story was far from over.

As Omega Obliterator charged his systems and Supreme Calamitas regathered her powers, the battlefield lay in wait for their next encounter, their next duel, their next joke.

Their duel, a testament to their strength and character, would continue. The battlefield, their audience, eagerly awaited their next performance.

And so, amidst the ruins and ashes, the tale of Omega Obliterator and Supreme Calamitas carried on, echoing through the forgotten battlefield.