I've never even read original pulp fiction (printed on cheap, pulp paper) but for some reason Conan the Barbarian comes to mind every time. And no, I never think of the movie version first.

I'm a jack of all trades but master of none. Too many jars and not enough hands.

For me it's definitely the manga, but the name in the manga is originally based on Arthur Conan Doyle in the first place lmao (he makes the name edogawa conan on the fly)