If you're looking for a series or books featuring these characters, here are a few steps you can take:
I just finished reading Hilda #5 by Luke Pearson, but I believe you meant to say "Hanz Kovacq" is not the correct author, and instead it's "Luke Pearson" who created the Hilda series. read hanz kovacq hilda 5 upd
Digital Surrealism: Analyzing the Visual Style of the Hilda Series If you're looking for a series or books