Law does not smile a lot, displaying a cautious, observing expression. He tends only to smirk when feeling pleased that a plan went as intended or while attempting to provoke an enemy. That being said, Law has a bolder attitude when faced with other infamous pirates, especially his peers from the Worst Generation. Despite Law's terse and rather unkind demeanor towards others, he still retains strong compassion and kindness (even if reluctantly), which he gained from Rosinante.