Expectation: From looking at the icon, their music taste could be EDM, techno, new wave, dubstep, or maybe some synthwave music. Thinking Daft Punk, Marshmallow, Skrillex, or any electronic vibes. Most songs contain upbeat, fast, bright, and has a punch on it?
Going to the bio, it's possible their playlist contain intense songs based on the setting they're in. Their world does have a conflict going on so putting intense electronic songs might make sense. Not really dark electronic music but gives "motivation" or "hype up" vibes on it?
Reality: OK, there's less electronic music but more on pop rock, pop, and probably alt rock like Skillet. It still upbeat and bright however, though, the speed is mixed between slower songs and faster ones. I'm quite right about there are certain songs that gives a "punch" like Skillet's Monster. There are few that gives intense and hyped up ones from the songs, so I was right about having such. Despite the bright tunes, I didn't expect some songs that contain lyrics with anger on it.
Greg's playlist is in his profile