Psychologically...
He's slightly older than Charlie and slightly less thick - so he's the leader of the two.

No Hopes
His parents are divorced and neither wants him so he's been living rough.

High Hopes
Long term, he dreams of playing guitar in a band.

The actor
Hoffman is played by Steven Meo, who has worked extensively in the theatre, radio and television. His TV appearances include Holby City, Nice Girls, Score and as Owen in BBC Wales' Belonging.