Dr. Kahl's Robot | Concept art characters, Vintage cartoon, Creative posters
Cuphead boss guide: Dr. Kahl's Robot in 'Junkyard Jive!' - Polygon
Cuphead - Dr Kahl's Robot Bust by FlamingoInk on DeviantArt
Dr. Kahl's Robot | Cartoon styles, Old cartoons, Creative posters
LEGO MOC Cuphead- Dr. Kahl's Robot by Penguins and plastic | Rebrickable - Build with LEGO
Dr. Kahl's Robot | Cuphead Wiki | Fandom
After beating the game, I have to say Dr. Kahl's Robot is by far the most difficult boss battle. My #2 would be Grim Matchstick and #3 the Devil himself. Unheard of