After the Evil Queen destroys Percival's village, he flees to Camelot and eventually grows up to be a Knight of the Round Table. Percival accompanies Arthur and Lancelot to where Excalibur is, and witness Kay attempt to pull Excalibur from the stone. Kay fails and ends up reduced to dust, while Arthur succeeds in pulling the legendary sword from the stone, making him the ruler of Camelot.
Percival and the other knights accompany King Arthur to greet Emma Swan, along with her family and friends, which they guide back to Camelot as their guests. Percival recognizes one of the guests, Regina Mills, as the Evil Queen and tries to kill her at a ball only to be tackled to the ground by Robin Hood. Robin is wounded by Percival, who is eventually stabbed and killed by David Nolan.
- None known (family)
- He is based on Sir Percival from 'Arthurian Legend'.
- S5, E01: "The Dark Swan"
- S5, E02: "The Price" (flashback)
- S5, E04: "The Broken Kingdom" (flashback)