[T-5150 HAS NOW AWAKE AND READY TO COMMAND]
T-5150 is an assistant of Commander Tartar. He's a menace and always talks about disturbing jokes (don't ask him about humans though). He never seen any Inklings due to his absence from a post-game Octo Expansion, since Tartar hasn't completed his very own subject form (yet). He's a quick learner whenever he sees any living creature's activity, he'll follow when no Tartar surroundings. As you fight with him, he's more difficult than Inner agent 3. However, he does recognise Trapper since he was told by Tartar that he was inspired by Experiment no.5150 (Trapper).
One fact: he always smiles for making an great appearance. But if you make him upset, he'll count 10 seconds.
Silly doodles and first concept design