Lo Pei was a sacred warrior of the Ling Dynasty. As seen in "Project A, for Astral," he led the uprising against Shendu 900 years before Season 1, using Scroll Magic to turn the demon into a statue and take away his talisman powers. Lo Pei then hid the twelve talismans around the world. He has light skin and a long light black beard with a mustache. He wears long green robes, calling his magical scrolls out from his sleeves as necessary. He also has a unique shoulder-belt that holds the talismans and can be 'flipped close' to hide the talismans. He is relatively soft-spoken, and he often uses nature-inspired analogies to describe or muse upon his situation. However, when it is time to fight or he feels he is being threatened, he becomes curt and forceful. He refuses to even speak Shendu's name, referring to the demon as "the ultimate evil."

The episode "The Warrior Incarnate" (set sometime between the location of the Horse and Monkey talismans) reveals a terra-cotta statue of Lo Pei on exhibit at a San Francisco Museum. The Chans and the Dark Hand all seek to examine the statue's inscriptions for possible clues as to the whereabouts the the remaining talismans. Jade spirits away the statue and animates it with the Rat Talisman, intending to ask it about the talismans directly. However, Lo Pei does not trust her, Jackie, or anyone else in Section 13, instead gathering the talismans and going out to hide them again. He is temporarily tricked by the Enforcers into thinking them to be allies, but he soon sees through them. They take the talismans anyway. Jade encourages him to resume the battle, even renewing his sense of purpose when he realizes that he is just a statue bearing the magic of the Rat. He engages the Enforcers and takes back the talismans before being surrounded by Shadowkhan. In the face of such enemies, he passes the talismans to Jackie and Jade, as well as entrusting them with the charge to protect the talismans. As they retreat, he fights until he is nearly overwhelmed. By then, Jackie and Jade have gained some distance, and he removes the Rat talisman from himself, throwing it all the way to Jade before turning back into a statue. Apparently, the Dark Hand loses interest in the statue after that, because its next and last sighting is when it is back in the museum, safe and sound... and giving a thumbs-up, which reflects to Jade the alliance she offered to him in his time of need.

Lo Pei is seen again only in a remembrance of Shendu in "Re-Enter the Dragon." Daolon Wong knew the same twin-scroll sealing spell that Lo Pei used, and reveals it to Uncle Chan to defeat a resurrected Shendu, trapping him into statue form again and re-fabricating the twelve talismans.