We call it "Tim and Struppi" here. Never liked it very much. Though I also forgot e.g. Lucky Luke which I liked very much. There are quite a lot good series.

I'm trying to remember the name of one specific comic or series though: sci-fi theme, floating city in space, many different races live there, there is an elite humanoid alien race with blue skin and 6 eyes in 2 columns, with blue blood wearing skin-tight shiny armor, with psycho-kinetic powers, human male poses as one of them and kills a female alien possibly to steal her power, steals also her space ship, IIRC a chase through the space city ensues.

Maybe somebody knows the book, I absolutely cannot remember if this is from Valerian or something else, any hint would be grately appreciated. I think I read it last 20 years ago. Text was in German. Typical Carlsen/Egmont comic book format.

Edit: It's NOT Yoko Tsuno "City of the Banished Ones". Different series or one-shot.

French here. Your description reminds me a hell of a lot of Valerian and Laureline "Sur les frontières" : https://www.amazon.fr/s/ref=nb_sb_noss?field-keywords=978220...

You should check it out.

(Not sure about the actual translated English title, but a literal translation would be "On the frontiers")

Most Valerian comics are great by the way, and they all have been republished recently, at least in France (and probably also US because of the -rather disappointing- Besson's movie)

YES – that's exactly it, I remember the cover. Thanks!

And Lucky Luke, from the writer of Asterix!