Ectumus was once a humble IT guy, working for Half-Moon Betta Inc., with a truckload of relationship problems, when his ship crashed onto Slarth, and his body died. The parasitic slime found on the planet's surface took over his and his crewmate's rotting corpses, and brought their empty shells back to life. The slime's brain-altering properties gave him a newfound hatred of the world, and he decided he wasn't the tech guy anymore. He started building his company, Slime Star, raiding several hundred dwarf planets to mass-produce his magnum opus: DICORE. This product immediately failed, because a certain Pyro was very angry at him for breaking all of her mother's ribs, so she melted his body down using chemicals she found on the working site, killing him.
Official artwork of Ectumus Sleg.
Elizabeth Pelis (unfortunately)
Diet Pebble
Talking on the phone with Silvia
Reading the dictionary in his freetime
Capes
Ducklings
Kangaroos
Computers
Children
Calling people by their actual names
Waiting for things
Online Delivery
Respecting people
Everyone around him
Himself
The fact that actions have consequences
Seafood
Jazz
Ectumus probably had depression before he was slimed.
Just before his ship crashed, Ectumus was about to be thrown off the ship anyway in an attempted mutiny.
Ectumus' favorite animal (besides the horrifying kangaroo) is a goose.
Nobody knows why Ectumus and Elizabeth divorced, but it left them both in major ruin.
Ectumus feels sympathy for Pyro, but mostly because he feels bad for killing Elizabeth.
If Pyro didn't challenge Ectumus first, he probably would've gave Pyro a 'proper' childhood, but completely ignore the fact that he doesn't know how to raise kids, or he would've used her as testing for DICORE, because she's immune to most of the side effects.