Question: Which American comics artist, worked for both Marvel Comics and DC Comics, and made the three-issue Skull & Bones?
Sentence (from "Dan Spiegle"): Dan Spiegle (December 10, 1920 – January 28, 2017) was an American comics artist and cartoonist best known for comics based on movie and television characters across a variety of companies including Dell Comics, DC Comics, and Marvel Comics.
Relevant evidence: No