In March 3001, he led a non-violent protest against having a dark matter tanker fly past Pluto, which had been turned into a Penguin reserve. He led a peace ring around the tanker, which failed due to the three-dimensional nature of space. When the tanker's captain dumped the entire load of dark matter onto the penguin reserve, Waterfall Sr. observed that the dark matter was nature's "love drug" and that it made the penguins extra fertile.
To avoid overpopulation of the penguins, he initiated penguin hunting season as an effort to lower the population, much to the dismay of Leela, who thought she had found some sanity in his organization's humanitarian efforts. However, Waterfall Sr. was pecked to death by penguins when Bender led them to war, and his father vowed to avenge his death.