My first two. Probably have two more coming soon.
Character Name: Marth (Lucina)
Character Gender and Species: Female (masquerading as Male), Human
Originating Game: Fire Emblem / Fire Emblem: Awakening
Five Words to Describe Personality: Driven, Serious, Stoic, Compassionate (with friends, allies), Strong Willed
Battle Skills and Weaponry: Expert Swordsman/woman, the Falchion
Pokemon or Other Partner: None (anyone want to be her S-Support?
Brief History: Marth was the Hero-King and swordsman of legend, and a former, legendary combatant in previous Super Smash tournaments. But all legends eventually come to an end...After saving his world from various threats, and teaming with the other Smashers to save the universe from the Slipspace Emissary, Marth returned home and lived out his life, and like all mortals, eventually dying. Years upon years passed...His descendants would come to save the world again, from the foul god Grima, who would finally be destroyed for good by the young noble Chrom and his stalwart companion, known only to history as the Avatar. They wided from an alternate timeline, one where Grima succeeded and they had all died, by their future children. Chrom's daughter, Lucina, was their leader. But despite the joy she had at finally meeting her father, and knowing her mother, it was not her place to remain. As welcome as they made her, they had their own daughter, their own Lucina, and it was simply not her place to continue in this new world...Tired of death, fearful of seeing any other friends die, she fled the world after bidding her infant self to live a better life than she was ever to know. Donning the mask again and resuming her persona of the Hero-King Marth, she was mistaken for her legendary ancestor by the organizers of the Super Smash Bros. tournament, and brought to Minerva to fill his place in the roster. Keeping her true identity a secret, unsure of this new world and technology and people, she just longs to find a place to fit in, to relax...to no longer be alone.
Character Name: Dark Link
Character Gender and Species: Male, Unknown, presumably Hylian
Originating Game: The Legend of Zelda: The Adventure of Link
Five Words to Describe Personality: Lost, Angry, Jealous, Confused, Bold
Battle Skills and Weaponry: A dark copy of the Hero of Time, every skill and every piece of equipment the legendary swordsman had also belongs to Dark. His primary weapons are a sword and shield, the Dark Master Sword and a Shadow Hylian shield. Also in his inventory are items such as the hookshot, bombs, a bow and arrow, boomerangs, warhammers, gauntlets...Anything that his counterpart ever touched or used, so has this darker clone.
Pokemon or Other Partner: None
Brief History: Dark first came into existence as a curse, a being created by the dark lord Ganondorf's magic when he corrupted the Water Temple of Lake Hylia. When the Hero of Time entered the cursed chamber, a foggy room with mirror-like water and a single island in the center, his essense was drained, copied, and turn into one of his greatest challenges. After an intense fight, the Hero of Time defeated his copy, and that seemed to be the end of it...But it wasn't.
He has no idea how he survived, why he survived, or why he existed. Finding himself alive, barely, on the edges of the restored lake after Ganondorf was sealed inside the Sacred Realm, he tried to learn just who he was. It wasn't long before he was confronted with the exploits of his "brother." The fame, the glory, the popularity...Why couldn't such be his? When the Hero of Time was summoned to Mivera to aid in the creation of the Super Smash tournaments, Dark followed him, and stayed when the Hero returned home. During the second tournament, he confronted his brother again in a challenge, and again in the third tournament, only to be defeated each time. Humiliated, mocked for his existence...Now he emerges again, intent on finally earning the life, the fame, that he's always craved. Instead of a challenger from the shadows, he seeks to participate openly in the tournament, to prove once and for all who the better "Link" is. To prove his worth...To find acceptance, and justification for his existence...