The Plumber

The Plumber is the main character in Plumber Who. He is over 93,000 years old and spent 60,000 years of his life in Oceanside, California. He is a race known as the "Grimelords", who travel through time in the Timely or Instant Legitimate Eco-Friendly Time-Traveler, or T.O.I.L.E.T. He carries a sonic plunger with him wherever he goes. It can open any door, or override any computer system.

The Plumber has had many different companions in his time. Although his first couple companions are unknown at the time, his 3rd companion, Bethany, was left in 1790 after breaking the T.O.I.L.E.T. This could have also contributed to the Plumber having to rebuild the T.O.I.L.E.T., as mentioned in the episode "The T.O.I.L.E.T.".

It is unknown what number companion Will is. He is possibly the fourth companion, but it is ultimately unknown at the time.