Sabre and Origin doodles because the concept of them being Creator and Creation in RQ / TR makes my fluff and angst brain go brrr (we ignore SS Origin that guy is a bitch lemme have sweet RQ / TR Origin with his dad)
The first one is TR and the second is RQ. Their designs are slightly different because the TR one was drawn today while the RQ one was a few months ago.
I headcanon that RQ! Sabre got to spend some time with Origin (who looks like a child because this is the version of him when he was only just created after the reset so he's young) before getting sent into the RQ world in the loop, so the second image is them just being Creator and Creation / Father and Son (Galaxy was considered Time and Elemental's father because he was their Creator so I'm applying that logic to Sabre and Origin) before Sabre is put back into the RQ world and forgets Origin </3
Origin still looks young in the TR version because he's still newly created when TR first starts to exist (and also he's an immortal being, it'd take some time for him to fully mature so he is considered young for a decent chunk of time)