Going to probably have MDR tone back the crazy old man ranting. He'll probably have figured out he's going to be here a while, so acting crazy isn't going to help.

Nor will acting angry either.

For the droid thing, he'll probably mostly just act to guard characters who have more know how at hacking than him, but he at least should know what wires to cute to put them out of comission.

While making them easy to repair.

Otherwise he'll mostly be looking to build relationships and train people.