"To think such a remote and backward planetary civilization could produce a powerful being like you. The wonders of the universe are truly unfathomable."
Thanos, seated upon his floating throne, murmured this praise as he rose to his feet, halting the Black Order's advance with a gesture...
An opponent wielding an Infinity Stone deserved his personal attention.
The golden lightning descending from the skies gradually stabilized as Sean's raging battlelust cooled. This cosmic overlord was unlike any enemy he has faced before.
Thanos... Leader of the Black Order, descendant of the Eternals, sole survivor of Titan, the terrifying existence that made countless planetary civilizations tremble in fear. He was a living symbol of death and destruction across the vast cosmos.
"Do you always spout nonsense before fighting?" Sean said coldly.
Beneath the Sentinel armor, his power gathered like molten lava in a volcano, accumulating toward an inevitable eruption.
"Hah! An amusing human. I simply fear after unleashing my full power, you won't remain standing long enough for conversation." Thanos descended from his ancient floating throne.
His massive frame hovered in the void like an impassable mountain range, radiating overwhelming pressure.
The cosmic overlord's metal gauntlet flexed, first opening, then clenching, as torrential energy gathered like tidal waves...
Sensing the danger, Sean fired a thick energy beam from his palms. Scorching winds swept across the heavens as the beam bisected a Leviathan beast drifting nearby.
Two colossal energies collided like opposing tsunamis in the void. The dazzling golden torrent shone with the brilliance of stellar bodies, while Thanos' long-accumulated energy surge resembled the terrifying black holes formed from collapsing space and dying planets, exuding endless deathly aura. Anything caught in its gravitational pull would sink into eternal darkness.
Their clashing powers drowned out even the battlefield's chaos. All combatants paused to witness the two inconceivable beings... one a rising golden sun bursting with radiant light, the other a cold and lifeless black hole devouring all hope.
When their energies collided, the boiling chaos of Asgard fell into absolute silence as if time itself had frozen.
Yet within this eerie quietude, reality began fracturing. Light distorted like buildings caught in a catastrophic storm, the very fabric of space crumbled as black fissures expanded into miniature singularities, annihilating all matter in their path!
The resulting shockwaves erupted like bursting dams in all directions. Unfortunate Chitauri soldiers vanished before they could react, their very existence erased by the raging energy tides.
Even the durable barriers of space couldn't withstand such violent compression, shattering like fragile glass with an audible crack!
The rampaging energies ground everything within range into primordial nothingness.
Still hovering midair, Sean was blasted backward like a cannonball, carving a deep trench through Asgard's ruined cityscape. His momentum carried him through building after building until he regained control and steadied himself.
Meanwhile, the cosmic overlord remained firmly in place. Only his floating throne had completely vanished as if never existing.
Members of the Black Order wisely retreated from the danger zone, for even the peripheral energies from this clash carried devastating destructive power.
"Do you still cling to confidence in victory?" Thanos' resonant voice echoed across the heavens, his purple-skinned frame became the focal point for all observers.
Whether Asgardian warriors or Earthlings watching through screens, all silently prayed for the being called Sentinel to prevail. In this moment, he had become Asgard's– nay, the Nine Realms' final line of defense...
"No." The muffled voice through the helmet rang clear, "I'm more certain than ever!"
The second collision commenced instantly!
Sean crossed the distance with an ear-splitting sonic boom, hurricane-like shockwaves rolled off his golden-flickering fist as it unleashed terrifying energy tides meant to engulf the massive purple figure.
"The courage of the ignorant," Thanos remarked.
The cosmic overlord raised his arm, his metal gauntlet emitting intense vibrations resembling celestial collapse, the terrifying force causing space itself to warp.
Their attacks met in a flash brighter than any star.
*Boooom!*
A pseudo-nova explosion sent destructive energy rippling outward in transparent waves. The thunderous impact birthed a mushroom cloud of dust and debris!
Within the cataclysmic storm, the Rainbow Bridge connecting the Nine Realms fractured, triggering tsunami-like cosmic tides. Everyone on its surface scrambled desperately to escape this apocalyptic disaster.
The endless pressure radiating downward reduced both the Chitauri swarm and mighty Asgardian warriors to mere background elements in this grand conflict.
The raging energy surges threatened to obliterate Asgard entirely as reality's structure unraveled. The golden Sentinel and cosmic overlord high above warped space with mere gestures, defying all mortal comprehension.
"Your power extends far beyond this, yet only one may claim the Infinity Stones." Thanos' thunderous voice resonated within Sean's consciousness.
This was no mere physical contest, but a battle of wills between evenly matched opponents, each employing every means to gain advantage for final victory.
A terrifying aura expanded like a celestial body reaching its lifespan's end, collapsing into a massive black hole that threatened to devour even consciousness itself.
The endless dark abyss spread, submerging that radiant golden sun...
"I share that sentiment." Sean's response came firm.
While this notorious cosmic overlord's strength bordered on despair-inducing, it only hardened his resolve to claim victory.
After traversing such an arduous path, the end finally neared, and Sean would stake everything to seize that future!
Golden torrents surged, releasing billions of light rays as incomparable destructive power erupted! Like a millennia-pressurized volcano unleashing terrifying heat, it birthed tsunami-like shockwaves!
The violent storm engulfed Asgard in blinding flashes. This land that knew peace for millennia now resembled a ship tossed in tempestuous seas, teetering on the brink of capsizing!
"Without the courage to stake everything, I wouldn't stand here now."
Sean fully transformed into a stellar entity radiating golden light, while Thanos responded in kind; his massive purple frame pulsing with profound icy energy.
The air vibrated intensely with dense humming as space cracked like glass, fissures spiderwebbing outward...