Character development … looking glum

Carrying on thinking about the character, I've done some basic concept art. Whilst he's meant to appear battered and old, he still needs to appear appealing to the character. I'm hoping the splash of colour of his high vis jacket (as he works at a junk yard), will help this, along with his head piece.

(Trying to use Copic pens)

I like the idea of the robot character being a bit older, naturally due to the head piece we don't have to worry too much about the actor portraying this, as long as the design and movement conveys this. Things would be slower, a little bit more considered, there'd be a weight to the movement. A sense of 'fed up'. However at the moment I feel the character's teetering on the edge of too miserable. We want him to be sympathetic but not completely whiney and mopey. 

(Above illustrating 'feeling sorry for themselves' characters). 

Whilst there'll be a slowness to the character, he shouldn't necessarily feel defeated. If anything it'd be more sympathetic for him to be still at points thinking, rather than drooping and slouching too much. However this ultimately depends on script, the concept that the character is watching television would induce a sluggishness that has to be considered.