One Piece, Konjiki no Gash Bell!! Recommendations
Very similar (silly) humor and comedy, and overall similar style.
Also, somehow the character designs are alike, especially the crazy facial expressions, large mouths, etc.
Humor in both are very similar. I could be a really serious moment but it a split second you could start laughing at the random humor. They both have wacky characters, funny facial expressions with large mouths.