Seelkadoom the Hedgehog is a fusion clone of both Sonic and Shadow the Hedgehog. He is the main antagonist of Sonic RPG. He was created by Dr. Ivo Robotnik in his laboratory with the Chaos Emeralds, combining their negative chaos energy with the DNA of Sonic and Shadow. He is the completed work of Dr. Eggman's Grandfather, Gerald Robotnik.
* Osmose: Seelkadoom absorbs power from his enemy.
Magical Apokaliz: Seelkadoom’s strongest attack. Using Chaos Control, Seelkadoom freezes time and constantly attacks his enemy. Afterwards, sending a powerful energy blast at them before creating two after images that attack his enemies before they’re absorbed into the enemy and deal even more damage.
Dark Energy Beam: Seelkadoom can blast his enemy with a charged dark energy beam.
Aura Shield: Seelkadoom charges his power, increasing the range and size of his aura to act as a shield to block attacks with his dark chaos energy.
Telekinesis/Psychokinesis: Seelkadoom can move items and objects around him with his mind.
Chaos Control: Seelkadoom can teleport and control the flow of time.
Chaos Spear: Seelkadoom can generate golden bolts of chaos energy.
Dark Spear: Seelkadoom can generate black and blue chaos spears.
Dark Rush: Seelkadoom tackles his enemy, then blasts them with dark energy.
Dark Spear Rain: Seelkadoom releases dark spears and sends it raining down on his enemy.
Wave of Oblivion/Arrogance: Seelkadoom taunts his enemy into attacking him with his shield activated and sends a wave of dark spears out.
Dark Blast: Seelkadoom blasts the arena with highly compressed dark energy, heavily damaging anything within a 25 mile radius.
Execution Blast: Fires downwards lethal orb of dark chaos energy. This attack is normally used to finish off an opponent.
Speed Strike: Seelkadoom teleports to a nearby foe and then attacks them at blistering speeds and finishes off with a small but strong blast of chaos energy from his hand.
Chaos Hazard: Seelkadoom charges his power and summons a magical drop of chaos energy which when it hits the ground, it forms a large purple terrain buzz saw-like object that damages anyone within its range.
Gleaming Cosmic Veil: Seelkadoom charges his power and summons a shining eclipse eventually emerging into a Aqua-Blue planet-like sphere that damages anything it comes into contact with.
Dark Gust: Seelkadoom performs a powerful blast of dark energy around himself when he’s overwhelmed blowing the opponent away.
Pillars of Pain: Seelkadoom charges his power and does three tall beams of energy hitting multiple targets.
Ultimate Devastation: Seelkadoom charges at his targets and then continuously attacks them at blinding speeds, then charges some chaos energy in himself then leaps upwards and then charges again some dark energy into his hand for a small but powerful shot at his targets.
My Turn!: Seelkadoom dashes at the opponent and does basic combo and then does a powerful side-kick sending his opponent flying away.
Skyward Splicer: Seelkadoom kicks his foe to the sky, does a barrage of kicks at them, delivers an eagle kick, and finishes with a backhand to knock them away.
Chaos Cannon: Seelkadoom unleashes an energy beam at his target.
Meet Your Maker: Seelkadoom charges at the opponent and does a strong back kick, then follows up with a Double Updraft Kick to the ceiling and finishes it off with an Eagle Kick to the ground.
Bon Appétit: Seelkadoom unleashes a barrage of blows at his target, then fires a blast of purple Chaos Energy that detonates on impact.
Vanity: Seelkadoom unleashes a blue sphere of Chaos Energy that he fires at his target, that he is then prepared to deflect back at them if they try to redirect it at Seelkadoom.
Penumbra Moonsault: Seelkadoom sends his target to the air with a kick, and spindashes towards them at great speed from above, dealing immense damage.
Lance of Time: Seelkadoom strikes the opponent with a purple Chaos Spear-like projectile that stops time when hit, then performing several attacks afterwards.
Osmosian Onslaught: Seelkadoom does a barrage of combos, and unleashes his own variant of Sonic's Humming Top attack, then finishes it off with a spindash.
Galactic Explosion: An upgraded variant of My Turn! and Dark Blast where after Hyper Sonic reverts back into his base form, Seelkadoom seizes his chance and kicks the blue hedgehog's face, sending him crashing towards the wall. He then grabs Sonic and takes him to the sky, amasses his powers and causes a massive blast around them, killing Sonic instantly. Seelkadoom then drops the blue hedgehog's lifeless body, smirking while berating Sonic's attempt of fighting him.
Evisceration Blast Bomb: An upgraded variant of Meet Your Maker, Bon Appétit, and Penumbra Moonsault where Hyper Sonic reverts back into his base form and falls down towards the floor, hitting it two times before landing and getting up on his feet. That's when Seelkadoom sneaks up on him, kicks him up to the roof, and kicks him again, sending him to the wall, destroying and going through the wall in the process. The black-and-blue hedgehog then fires a huge purple Chaos projectile at his target, destroying him in an instant, then strikes a pose with a sinister smile and glare.
*Ferocious Prowl: Seelkadoom charges at the opponent and then stealthily hides in a shadow out of sight, fooling the opponent into thinking he’ll attack them head on. Once he’s behind his opponent without them knowing, he proceeds to do a slew of vicious attacks, finishing off with an a powerful downer-cut with both hands.
Wrath of the Apex: Seelkadoom boosts his own attack power, granting him a boost in offense.
Prance of the Apex: Seelkadoom boosts his own attack speed, allowing him to attack more frequently.
Bulwark of the Apex: Seelkadoom boosts his own defense, granting him more resistance in durability.
Vierstufige Symphonie: Seelkadoom does a slow, but punishing four-hit combo on his target, with the last hit being a brutal wind-up punch.
Apex Swarm: An upgraded variant of Dark Spear Rain that deals more damage and is much faster than the former. Seelkadoom does this attack by sending blue Chaos Spears raining down in a diagonal angle at his target after a slight charge.
Figures of Paranoia: Using afterimages to surround and distract his enemy, Seelkadoom takes this chance to unleash a devastating blast that causes a massive explosion, that knocks his target far away while dealing immense damage.
Desperado: Seelkadoom unleashes a barrage of attacks, followed with an attack that is his own variant of Shadow's Chaos Nightmare. He then finishes an attack with a brutal kick that causes a secondary after-hit upon first contact, knocking the target back.
Monochrome: Seelkadoom surrounds the world in a zone of negative energy, creating an extremely hostile environment that drains both the opponent's energy and life force.
Apex Annihilation: Seelkadoom locks his foe in place, then collectively charges massive amounts of energy in his whole body that he then expels. Once done, he will rush towards his target and strike all around them at breakneck speeds, then finishes with one brutal punch.
Apex Destroyer: An upgraded variant of Ferocious Prowl, Desperado and Vanity where after Hyper Sonic struggles to maintain his Hyper Form (flickering from base form to Hyper form in a split second), Apex Seelkadoom seizes the chance to strike Hyper Sonic with a spindash (and calling Hyper Sonic an idiot before doing so), followed up with a kick, and then unleashes a barrage of kicks leading to a somersault kick upwards. Apex Seelkadoom then rushes upwards and grabs Hyper Sonic by the face, sending him plummeting down while charging up an energy ball in his hand while he held a firm grip on Hyper Sonic's face. As he fires the blast, Hyper Sonic is reverted to base form and is sent down from the skies, with a massive explosion of Chaos Energy occurring afterwards- with a rather unamused Apex Seelkadoom looking away from the blast and facing the screen stating that Hyper Sonic's death was well-deserved.
Oblivion Orb: Seelkadoom amasses his Chaos Energy to his hand forming a black orb with turquoise outlines and electricity, which is powerful enough to force his target out of their transformations once fired at them.
Midnight Cannon: Seelkadoom fires an upgraded version of Chaos Cannon which takes the shape of a black and blue beam of Chaos Energy, that can be powered up further when he unleashes the full power of his Apex Form. Seelkadoom used it to overpower Hyper Sonic's energy beam effortlessly.
Other
Standard Tactics: Seelkadoom will allow his opponent to power up or attack only for him to swiftly counterattack or overwhelm them with a barrage of attacks. This also applies when he's transformed into Apex Seelkadoom.
Weaknesses: He's weaker without the Chaos Emeralds. He's cocky enough to where he gives his opponents an opportunity to power up against him, and catch him off guard. He also tends to hold back unless he feels overwhelmed.