<P> Like all White Court vampires, Thomas is not harmed by religious items, sunlight or garlic . Unlike most of them, he experiences guilt over his incubic nature, and tries to minimize the damage he causes--perhaps the legacy of his late mother . Like his brother, he is a monogamist at heart, and tries to keep his seductiveness in check . </P> <P> His dislikes include Red Court vampires, unnecessary clothing (i.e. shirts, shoes) when indoors, polka music, secrets (that he isn't in on), and his father . Thomas is also a massive slob: he lives almost exclusively on beer and microwave meals, and leaves the private rooms of his chic apartment an undecorated mess . Unlike many fictional vampires, he has a sense of humor about his nature, even showing up at a duel wearing a "Buffy the Vampire Slayer" T - shirt . </P> <P> Thomas was first introduced in the third book of the series, Grave Peril, where he showed up at the ball hosted by Bianca, a vampire of the Red Court . His presence there, instead of the presence of his father, was an insult to Bianca planned by Thomas's father, Lord Raith . He showed up with Justine, his girlfriend, whom he had "poached" from Bianca . However, as Thomas is a vampire, he feeds on Justine, causing damage to her soul . He ends up betraying Harry to save Justine, but helps him and Michael later, after Justine is kidnapped by Bianca . He returns Michael's sword to him, and helps them journey through the Nevernever . </P> <P> In Death Masks, book five of the series, Thomas shows up as the second in a duel for Ortega, a Count of the Red Court who was sent to kill Harry . Once again, his father's presence had been requested, and Thomas was sent as an insult . Although Thomas appeared intoxicated during most of the duel, he was actually helping Harry to some extent . </P>

When does harry find out thomas is his brother