That's right. Master Roshi is the founder of it. He's about as wise as he is perverted, but his martial arts skills are astounding! I owe a lot of my victories to his teachings.

[welp! call Goku intrigued. he's not underestimating Iroh, but for the sake of a contest in martial arts, matters such as Super Saiyan would be overkill]

Then, would you be interested in fighting me sometime? Even if it's just a spar. I'm checking out the barrier and getting my ducks in a row first, but training to pass the time works too.