Alex Wilder is the son of Geoffrey and Catherine Wilder, who unbeknownst to him were the leaders of The Pride, a cult worshipping an alien race known as the Gibborim. After witnessing a human sacrifice being committed by his parents, Alex rallied Nico Minoru, Chase Stein, Karolina Dean, Gertrude Yorkes and Molly Hayes to run away alongside him, hoping to escape their wrath and find a way to destroy the Pride once and for all. In truth, he had been cooperating with his parents the entire time, working to try and save them from the machinations of the other Pride members. He was ultimately killed by the Gibborim, but was later revived to become a thorn in the side of his former friends once more.
Alex Wilder is a nerd with a high intellect and the son of Geoffrey and Catherine Wilder. Upon reuniting with his childhood friends, they discovered that their parents used PRIDE to cover up ceremonial sacrifices of the Church of Gibborim. He teamed up with his friends and formed the Runaways. Having been framed for Destiny Gonzalez's murder, and with no other choice, they are forced to run.