Happosai

A powerful old man, possessed of an evil spirit. The feared and loathed sensei of Genma and Soun. 1Approximately 10 years ago, he harshly trained Genma and Soun by making them take part in his plundering and endure the punishments when he left them behind. Finally, they got him drunk, chained him in a barrel, threw the barrel in a cave, and sealed the cave with dynamite and a boulder hung with Buddhist scriptures. Of course, he escapes. He then proceeds to move into the Tendo dojo to train his successor. Genma gives him Ranma to train.

A 110% pervert, he lifts skirts, commits random acts of frottage, and constantly goes around stealing women's underwear for his extensive collection. His perversions are the source of his strength; without touching young female bodies or underwear, he loses his power. Akane and especially Ranma are his favorite targets.

Entrance:  Nettohen episode 15.  Volume 7 part 5.
Re-entrance:  Nettohen episode 114.  Volume 19 part 9.
Weapons:
    A small pipe, with which he flips opponents long
    distances, and the long-forgotten devastating secret
    Happo-dai-karin technique, which turns out to be
    throwing fuse bombs.
Alias:  `Happy' to Cologne, as he called himself at 18
Name:  "8 treasures together"