Some non-canon designs were based on the works of Ray Geiger.
untitled fan comic (2020)
Entrapta and Hordak on Beast Island after Season 5. Content warnings for ableism, suicidal ideation, major character death mention, unreality, possible eyestrain. Viewing pages at full size (right click and open in a new tab/window) is recommended because I am a doofus who made the text too small. :E (Alternately, PDF version here.)
fan fiction
untogether (2020, 5780 words) In the immediate aftermath of the war, Entrapta and Hordak spend some much-needed time catching up on the past. Content warning for discussions of past abuse/trauma, ableism, self-destructive behavior, and a moderately graphic description of a hand injury that could be interpreted as self-inflicted.
relaunch (2020, 6532 words) Canon-divergent rewrite set during S5E2 from Entrapta’s POV. Content warning for ableism and some violence.