Sherm (also called "Slick") is a fictional character in the Hey Arnold! TV series.

Sherm is a butcher whose hair is slicked back, prompting Arnold and Gerald to give him the nickname "Slick".  He and "Porkpie" covertly prepare a surprise birthday party for their fellow butcher and friend Marty Green. However, Arnold and Gerald misinterpret their actions as malevolent, causing them to follow and film the butchers during their discussions and planning of the party.

Sherm also claims to live in his car, though it is possible that this claim is just a figure of speech.

Sherm is possibly named after Sherm Cohen, a storyboard artist and director for the show.

Sherm’s only appearance in the series was in "Freeze Frame".