It would probably be hair-splitting to start a third thread on
Genuine Character, but into that I would put Steve for his absolute determination to meet a challenge, even if it all but kills him, yet who Is a gentle and modest guy; and Judy, who despite her immense grittiness turns out to be a lovely funny lady.
Back on topic:

I very much like how Sunetra seems to be but don't know enough about her life to talk of character. She certainly has oodles of personality, and I enjoy Jake's understated edge and humour.
Simon I think is largely misunderstood. Seems a good guy to me, quiet but sincere and emotionally there. Even if he can appear aloof or snitty.
Loved Caroline's Rwanda thing so I'll mention her too.