And now I'm kinda sad, because Bro being dead really blows a hole in the awesome fanart I was totally going to get around to making one of these days.
Two words. Alternate timeline.
Something being canonically impossible isn't really a valid reason to not make fanart of it.
But we all know Grandpas dead body will be yanked away from his space adventures and prototyped now that Jade is in the Medium.
Although this all relies upon somebody having the balls to wrestle him back down to Earth. And Bro is dead, so nobody like that exists anymore. Dad might be hard-boiled enough to do it, but he's currently occupied with company.
Edit:
I'm not sure if it's actually possible for Jade to recover Grandpa's corpse for the prototyping. The game certainly provides means for it, but they might not have the time to use any of them. It'll be something of an undertaking, and they'll have their hands full with Jack destroying everything. The players haven't even come across an Apparifier yet, and once they find one, they'll have to track down a corpse in orbit around Earth, possibly in a small time window between getting ported there and being destroyed when Bec blasts the meteor. I guess she could try ghost-captchaloguing it somehow, but if Dave's brains are anything to go by, people cost an arm and a leg in grist to make. Two arms and legs. And she'll need the actual ITEM for prototyping, not just the code. Oh, and I suppose someone could already have done it in the past (or the future), but trusting weird time shit to work the way you want sounds like a bit of a gamble.
And Vriska just can't catch a 8reak, it seems. Just when everyone's finally starting to get over that business with crippling and killing her roleplaying opponents and then blinding her
best only friend, they're suddenly yelling at her for creating an unbeatable enemy and dooming two game sessions.
Assuming she gets caught, that is. This could be a potent source of dramatic irony. She might never even discover it herself. ._.