- "Did you know that I was friends with Barney ever since I was a little kid?"
- — Lee Chaolan to his friends, referencing his childhood.
Lee Chaolan is an overzealous, eccentric and often ignored yet extremely wealthy teacher at Kyoto International School. He lives in a mansion, but not the same one found in Luigi's Mansion. His mansion, as it appeared in Tekken: Blood Vengeance, reappears in Alisa's Adventures in Rockoland during Evil-Man's birthday party as a clay-made model.
Lee Chaolan is very mature, and is still mature in the Rocko franchise. His maturity from Tekken: Blood Vengeance remains intact during Alisa's Adventures in Rockoland, and he has the same maturity as Reshiram during the same show, Dora Marquez during Barney and the Rocko Squad, and Roger-Roger during Xianghua in Rockoland.
In Barney and the Rocko Squad, he no longer works at Kyoto International School as a teacher, but instead he works at Professor Tinkerputt's factory as a toy inventor. His first invention was the Super Combot DX.
Kaiji Tang voices Lee Chaolan in both Barney and the Rocko Squad and Alisa's Adventures in Rockoland. Even though Lee Chaolan is absent in Xianghua in Rockoland, his Tekken: Blood Vengeance voice actor (who was also his voice actor in the Rocko franchise) is still used - for RoboSapien. He does return in The Rocko Squad Meets Pippi, though he keeps his Tekken: Blood Vengeance voice actor.