Answer:
Mr. Lamb is an old man who lived in a big house with a lovely and enormous garden. Due to a bomb explosion, he had lost one of his legs, and it was now replaced with a tin leg. He enjoyed talking to people and making them his friends, so he always kept his garden gates open.
Mr Lamb had a positive attitude towards life. Thought he was a lame and one lag of steel, he always used to be inspirational and believing in living life to the fullest. he also inspired Derry to look toward the world in a positive manner, and is a likable personality in the story.