House Hightower has a significant presence in "House of the Dragon." When the series begins, Otto Hightower is serving as the Hand of the King. His daughter, Alicent, is by his side in King's Landing and has a strong friendship with Princess Rhaenyra. Ultimately, King Viserys chooses Alicent to be his wife, and she bears children for him, Aegon and Helaena, continuing his house's line. In episode four, Viserys removes Otto as his Hand after Rhaenyra tells him that he'll stop at nothing to have Aegon replace her as the heir. And that comes true in episode nine. Though Alicent's children may bear the name Targaryen, they are Hightowers.
The house does briefly appear in "Game of Thrones." Alerie Hightower was married to Mace Tyrell. The head of Aerys's Kingsguard was also a member of House Hightower.
