- Late twenties. A reclusive savant, more comfortable around programs than people but still driven by a need to do good for those around him.

- While not entirely ignorant of social cues, he also doesn't spend a lot of time worrying what others think about him, making him seem a little distant and distracted in conversations.

- Has a very clipped tone, keeping his sentences down to the exact minimum needed to communicate and not much more than that. Should come across as someone who's speaking mostly out of necessity.

- Note, however, that Sandman being curt does not mean that he's cold: while most of the time he's focused on his business, he's more than capable of showing deeper emotions such as empathy, sadness, and anger if the occasion arises.

Additional voice note 30/07: His voice should be on the detached, monotone side, especially in the first line where he's stating a fact.