Originally a member of his family's Crime Syndicate, Antonio grew up in a rough and crowded family. Constantly seeing his father and uncles bring home people who'd they'd take to the basement, and screams would later be heard through out the night. Eventually when Antonio became of age, he was introduced into the Crime Syndicate itself, becoming his uncles enforcer. As time passed, Antonio became one of the most effective of the enforcers, able to strike fear into others by the name of epithet, the Manticore, as he specialized in poisoning his targets.
The Sinestro Corps had eventually found him worthy of a Qwardian Power Ring, and he was sent a ring. After binding with the Power Ring, he was taken to Sinestro's Home Planet, where he soon became a favourite of Sinestro. After his training, he left the Corps out of his own violation, not wanting to be held down to one organization.
He returned to Earth and became a Criminal in the United States for a short while, and took upon the name of Manticore to hide his true identity. His current designation is still unknown.
Due to his allegiance and how he was favoured by Sinestro, and perhaps even because of his bond with his Yellow Power Ring, Manticore’s Lantern Suit is quite visibly distinct amongst others. Unlike the other skintight suits manifested by the Power Ring, Manticore’s is much beefier and larger, more like a suit of armour than a basic bodysuit. In the middle of this armour, there lays the insignia for the Sinestro Corps, coloured black and white.In addition to this, Manticore’s suit does not sport the classic simple eye mask all the LanternCorps possess. Instead, Manticore possesses a helmet of sorts, with white lines travelling over the primarily black helmet. Manticore also possesses large curved spikes stemming from the suit, from the lower legs and forearm regions. As suggested by the colour of the Power Ring itself, Manticore’s suit is primarily yellow.
"In blackest day, in brightest night. Beware your fears made into light. Let those who try to stop whats right, burn like my power - Sinestro's Might!"
Yellow Lantern Ring Mastery: Having trained directly under Sinestro himself, Antonio eventually mastered the power of the Yellow Ring, despite his young age. Sinestro himself has gone and said that perhaps Antonio was made for the Yellow Ring, or even the ring itself was designed for Antonio. With such a claim, Antonio had to have had the abilities to back it up. His bond with the ring became so potent, Antonio was able to alter the suit that was generated by the ring, out of him simply wanting a more intimidating appearance. This bond has made his abilities much more powerful than general, perhaps due to his proximity to the leader of the Sinestro Corps, or out of his own prowess over the emotion of fear. Antonio has complete command over his and the fear of others, and with his Yellow Lantern Ring Mastery, he is a force to be reckoned with.
Fear of the Manticore: By using his mastery over his Yellow Lantern Ring, Manticore was able to develop his own unique ability, stemming from what gained him the ring in the first place; poison. Having worked as his fathers personal chemist in creating poisonous concoctions, Manticore wanted to keep the human part of him alive, so he decided to use a part of his history in his abilities. He is able to create small spikes of yellow energy and fire them at opponents at blitzing speed. Contact with it releases a chemical reaction similar to a degenerative neurotoxin, but on a much more potent scale.
Energy Blasts: Similar to other Lantern Corps, Manticore is able to send blasts of yellow energy outwards in various shapes and forms. From a selective and small blast to a chaotic and massive blast outwards, Manticore has many options with his energy blasts.
Force-Field Generation: Manticore also displays the ability to manifest and generate force-fields of yellow energy. His shields have been shown to be highly durable, able to take a full-power blow from Sinestro as seen during Manticore's battle against his mentor when he was leaving the Corps. Physical contact with the shield has been shown to cause the yellow energy to feed on and generate the primal fears of those that made physical contact with the force-field.
Energy Constructs: A feature shown in practically all of the Lantern Corps, Manticore shows the ability to manifest and create constructs of his yellow energy. What he can produce with these constructs is only hindered by his imagination, and as such, this ability has unlimited potential. From a weapon to a speeding industrial train, Manticore has great prowess over his energy constructs.
Instill Fear: With this ability, Manticore is able to release a minuscule and subtle wave of yellow energy outwards. Contact with this energy wave causes primal fears to manifest in the minds of those whom have made contact with this energy. This can be used to incapacitate opponents for cheap blows or a distraction for a quick and rapid escape.
Phasing: An ability possessed by members of the Sinestro Corps, Manticore has the ability to phase through objects. How the Sinestro Corps are able to do this is a mystery, but Manticore says it involves displacing his presence to make it so other objects don't exist, at least materially.