- Primal Fear: Loads: claustrophobia AND agoraphobia, fear of the dark, sense-loss (by wearing thick blinded space-suits), asphyxiation (especially by choking on your own fumes).
- Squick: Solo's living conditions. For example, the toilets have stopped flushing in his Silo, so since Solo's the only one around, he just uses a bathroom until it gets disgusting before moving to another.
- The Woobie: Solo, who is 50 years old and has been alone since he's been 16. Mentally, he's still a (smart, shy, kind) little kid.