|William "Billy" Kaplan|
|Citizen of the United States with no criminal record.|
|Nation or Planet of Origin|
|Leonia, New Jersey|
|Base of Operations|
|New York, New York|
Witch who can manipulate magical energies to seemingly limitless effects including; destructive magical bolts, energy shields, teleportation, levitation and healing.
|Young Avengers #1 (April, 2005)|
|Allan Heinberg & Jim Cheung|
After the marriage of the mutant Wanda Maximoff (Scarlet Witch) and the synthesoid Vision they conceived and bore twin sons, Thomas and William, via Maximoff's magic abilities. Unknown to the couple their children were created from two lost souls born of energy fragments of the hell-lord Mephisto - who later sought to reabsorb the twins, but because they had been so transfigured by the Scarlet Witch's magic they temporarily destroyed Mephisto and were set free.
Surviving as individual entities the twins were adopted by separate families. William was adopted by the Kaplan family and raised in New York's Upper West Side. As he reached adolescence William Kaplan realized he was gay and suffered bullying by a fellow classmate because of his homosexuality. After a chance encounter with the Scarlet Witch, apparently neither mother nor son were aware of their relationship, she encouraged him to stand up for himself. Soon after Kaplan found that he had mystical powers, but limited control over them, and when confronting his bully nearly killed the boy.
Shortly after his incident with the bully, Kaplan was approached by a young Nathaniel Richards (Iron Lad) who was fleeing his older self the time-lord Kang the Conqueror. Iron Lad located Kaplan with a failsafe program within the deactivated Vison's programming designed to locate the next generation of superpowered youth with a connection to the Avengers, in the event the original team was unable to challenge an impending threat. Desiring to train his new teammates Iron Lad formed the Young Avengers with Kaplan taking a codename to honor the thunder godThor as the Asgardian.
After the Young Avengers were forced to disband by a reconstituted Avengers team, the teenagers continued their activities with Kaplan taking a codename to reflect his magic nature as Wiccan.
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