Rik Mayall.

From a Radio Times article -

Mayall was cast as the pesky poltergeist Peeves in the 2001 film, who is known to patrol Hogwarts getting up to chaotic mischief. The role was meant to be a recurring one but Mayall’s scenes never made it to screen, with director Chris Columbus later revealing that they were unhappy with the character’s design.

The Young Ones actor revealed that he wasn’t exactly a fan of the series – “The film, with respect ... no, with no respect at all... the film was shit” – and only took the part as the children at his own kid’s school were talking about the books. From the sounds of it, though, he at least had fun on set.

"I got sent off the set because every time I tried to do a bit of acting,” he said. “All the lads who were playing the school kids kept getting the giggles, they kept corpsing, so they threw me off.

“They asked me to do it with my back to them and they still laughed. So they asked me to do it around the other side of the cathedral and shout my lines, but they still…