Subspace absolutely loves blowing stuff up and causing chaos everywhere. He seems a little energetic and is very sadistic, this can be shown when he says things like ¨How much poison do you think they can handle?¨. Its clear he likes seeing pain and misery running about. He also somewhat despises Biograft as he thinks Biograft is fragile and useless. He thinks that his trip mines are his greatest invention and does not seem to like that Biograft needs these crystals to power up, this could mean that he is selfish and values his crystals. His hate for Biograft might be the reason why Biograft hates everybody.
Lore
Subspace lost his left eye in a violent altercation with Medkit.
Subspace uses an unnamed energy source that has multiple applications. In Subspace's case, he uses it to blow other people up and create chaos.
Subspace was previously working partners with Medkit working on the unnamed energy source.
However, due to their creative differences, a violent confrontation occurred between the two, leading to the loss of one of Subspace's eyes and the two parting ways as enemies.