Although Jake certainly lacks the posh speech habits of Steven, he isn’t nearly as violent as the Jake in the Moon Knight television series. Jake’s strength in the comics is finding valuable informants in people that Steven wouldn’t even consider, like the homeless man Crawley, or Gena Landers, the owner of Gena’s Diner, per Marvel.

However, per The Mighty Avengers, Jake does still appear to act as Marc’s dark side in the comics. Marc is ashamed of the way Jake operates.

Source: https://www.distractify.com/p/jake-lockley-moon-knight-comics