a) The Tourist IV (Tentacled Creature)(work 492) by HR Giger
b) References The New Gods #2, page 1 (1971) by Jack Kirby ?
d) Here we see what the front of the helmet becomes of the rim
e) The top of the helmet becomes this hood over the bath
f) Darkseid's upper arm become the tentacled torso of the creature in the bath.
g) The circular word title bubble becomes a curved structure
h) The arm of the woman becomes the slanted opening of the bottom of these pipes