Cheeky chappy

Tinkerer, inventor, scavenger, abecedarian, potterer, artisan - take your pick, really.

He dabbles in just about anything that might be of interest and then everything else when he's bored.

He likes to think he's a ladies man. Unfortunately, he's the only one that thinks it.

He likes to think he's the foremost expert in numerous subjects. Actual experts in these subjects would probably disagree.

All in all, he's harmless enough, really.