>>536510429
A mix between disappointment and sadness. Toriyama was good at making expressions that meant multiple things.

>>279649402
I like things more in the Majin Vegeta situation where it shows Tori was good at drawing varying expressions. You can tell Goku is a mix of pissed off and something else and Vegeta is sweating buckets at what he sees he has to do for a last chance to fight his rival.