Wyatt Halliwell
Wyatt Matthew Halliwell is the first child of Piper and Leo, who made his first appearance during the season five episode "The Day the Magic Died". At first, Wyatt is played by an unknown and uncredited baby. Starting in the season five episode "Necromancing the Stone", infant Wyatt is played by twins Jason and Kristopher Simmons until the series finale "Forever Charmed". In two episodes, young, pre-teen Wyatt is played by two other actors: Ryan Bradford Hanson in the season seven episode "Witchness Protection", and Tanner Fox in "Forever Charmed". As an adult, in flashforward and in time travel stories, Wyatt is played by Wes Ramsey.
Wyatt is the prophesied twice-blessed child, a being of unimaginable power. He is the first born of a Charmed One and the first male witch in his family. Wyatt has the known powers of force fields, orbing, telekinesis, telekinetic-orbing, projection and healing. While he was still in utero, Wyatt was powerful enough to use his powers, namely his force field, which made Piper virtually invincible during her pregnancy. He also once switched his parents' powers temporarily, before switching them back.
In season five, demons such as the Hawker Demon (Jack McGee), Parasites (Andy Mackenzie and Nicholas Sadler) The Crone, attempt to kidnap Wyatt. The Crone succeeds in getting Wyatt and sees a glimpse of his future, warning of a great power yet to come. She is eventually vanquished by The Charmed Ones. Grams is summoned from the afterlife for his wiccaning; she is astonished to discover that he is a boy as males have never been born into the Warren/Halliwell family. However, Penny eventually overcomes her bitterness towards men, accepts Wyatt into the family and performs his wiccaning. In season six, Wyatt is temporarily erased from existence by The Cleaners (Kirk B. R. Woller and Darin Cooper), when he exposes magic to the world by conjuring a massive dragon out of the television and letting it loose in San Francisco. However, The Cleaners stop their quest to take Wyatt after the sisters threaten to keep exposing magic. It is later revealed that Wyatt is the heir of King Arthur and is destined to wield the sword Excalibur. Piper and Leo's second son from the future, Chris, travels to the present day to prevent Wyatt from turning evil. They eventually discovered that the elder Gideon sought to eliminate Wyatt, believing that he was too powerful to keep alive. However, it was Gideon's actions that ultimately caused Wyatt to become evil. Leo later averts this future by killing Gideon.
In season seven, Wyatt uses his healing powers to save Piper from a deadly coma. Piper is called to Wyatt's pre-school when he begins talking to himself; in reality, Wyatt is talking to the demon Vicus (Marcus Chait), who is trying to gain Wyatt's trust to turn him evil. Piper summons adult Wyatt from the future to get answers, and he turns evil before their eyes. Leo is able to regain Wyatt's trust and the spell is reversed. When the sisters prepare to fight the demon Zankou, they leave Wyatt and Chris in the care of their grandfather, in case they do not survive. In season eight, after the sisters and Leo use magical disguises to hideout due to their fake deaths, Piper and Leo regain custody of Wyatt and Chris. During the events of The Charmed Ones' final destined battle, Wyatt is kidnapped by the demon Dumain (Anthony Cistaro), who had Billie and Christy Jenkins steal infant Wyatt's powers to unleash The Hollow, causing his powers to be stripped in the future. Adult Wyatt and Chris then return from the future to figure out what happened. After his powers are restored, adult Wyatt and Chris return to the future. In the flash forward montages to the future, Wyatt and Chris are seen preparing a potion together.