Bud Flood, better known as the Liquidator, is a supporting antagonist in Darkwing Duck. He was transformed into living water and became a supervillain.

He was voiced by the late Jack Angel in Darkwing Duck, while in the 2017 reboot of DuckTales, he was voiced by Corey Burton in "Beware the B.U.D.D.Y. System!" and Keith Ferguson in "Let's Get Dangerous!", to which the latter also voiced fellow Darkwing Duck villain Megavolt in both the aforementioned episodes.

Bud Flood was the owner of the Sparkling Crystal Pure Flood Water, a bottled-water company. When a heat wave struck St. Canard, he decided to sabotage his concorrents by poisoning their water supplies. Darkwing Duck found him during his last sabotage, and he accidentally fell in one of the poisoned water tanks, melting away completely and presumably dying. But somehow the poison turned him into a living being made completely of water, which also gave him the power to control water. He blames Darkwing Duck for his accident.

Later, Liquidator joined the Fearsome Five, being the most mentally stable member.