Step 1: Context:
'On the Face of It' by Susan Hill is a play about Derry, a teenage boy disfigured by acid, and Mr. Lamb, an elderly man with an artificial leg who lives alone in a garden open to all.
Step 2: His character traits:
Mr. Lamb is an optimistic, warm-hearted, and philosophical old man who refuses to be defined by his own physical disability. Unlike others, he never pities Derry for his disfigured face; instead, he treats him as a normal, capable individual, encouraging Derry to embrace life fully rather than hide from the world out of shame or fear.
Step 3: His impact on Derry:
Through his open garden (symbolising his open mind and open heart), his stories of bees and his own accident, and his refusal to see himself as a victim, Mr. Lamb gently helps Derry begin to overcome his self-pity and fear of the world's judgment, before Mr. Lamb's own sudden death at the play's end.
Final Answer:
Mr. Lamb is portrayed as a wise, life-affirming, and compassionate old man whose own acceptance of his disability inspires Derry to face the world with courage rather than shame.