Gerhard Wiesbeck is one skilled tattoo artist. His complex designs are comprised of intricate line work and minimal color. If you want to get some work done by him, then you are going to have to make your way out to Germany.
Mitsuo Katsui (I assume this has something to do with Japanese typography. However, it reminds me of the kind of designs you get on radio spectrum analyzers... which I've been trying to incorporate for years...)
https://flic.kr/p/8aACea | Japanese Graphic Design, Mitsuo Katsui | Morisawa <i>Font</i> computer designed poster (one of a set of four) by Mitsuo Katsui 1998. Printed offset lithography. I took this image (it's minus the word font in English) from the Katsui Design Office website <a href="http://www.katsui.co.jp/" rel="nofollow">www.katsui.co.jp/</a> a fantastic site to visit.