145632 Rocko William

Rocko William holding the Poltergust 5000.

You may be looking for Rocko H. Koopa.

Doctor R. William, full name Doctor Rocko William (mostly Professor R. William in Australia) is Professor Elvin Gadd's younger brother and assistant. He made his debut in Luigi's Mansion 2 as the one of the protagonists. Much like his older brother, Elvin Gadd, he speaks gibberish language (supplied by Kazumi Totaka). He's also voiced by Kazumi Totaka, but with a lower voice than Elvin Gadd. Like his brother, his text is always translated in the text box below.


Luigi's Mansion 2Edit

He made his debut alongside his older brother in the released sequel, Luigi's Mansion 2. He and Elvin Gadd gave Luigi the Poltergust 5000 which was more powerful than the Poltergust 3000. He made his first full appearance in this game (not including Luigi's Mansion 64 because it was cancelled).

Luigi's Mansion 3: The Room of DOOM!Edit

Rocko William once again makes a full appearance in Luigi's Mansion 3: The Room of DOOM!.

Luigi's Mansion 4: Haunted DreamsEdit

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Luigi's Mansion 5: Curse of the MansionEdit

Doctor Rocko William appeared in Luigi's Mansion 5: Curse of the Mansion as a supporting protagonist once more. He was seen driving his truck that was packed with mushrooms while on his way to the Mushroom Festival. To his surprise, the Mushroom Festival was destroyed and nobody besides Luigi was there. He thought that he was too late and everybody wrecked the festival because of him, but Luigi explained to him that it was because Bowser had just kidnapped the princess again and destroyed the Mushroom Festival. Later on, Doctor Rocko William helped Luigi on his quest to recover the Power Stars.

Luigi's Mansion 6: U Are Doomed!Edit

Doctor Rocko William makes an appearance in Luigi's Mansion 6: U Are Doomed!!.


  • Coincidentally, both the koopaling and the doctor share the same hair color.
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