Which character is mr brufs law firms errand boy with prominent eyes?

I think he called the boy Mr. Luker.

Sorry, here is the quote:

Mr. Bruff laughed. "They call the poor little wretch " Gooseberry" at the office," he said. "I employ him to go on errands--and I only wish my clerks who have nick-named him were as thoroughly to be depended on as he is. Gooseberry is one of the sharpest boys in London, Mr. Blake, in spite of his eyes."

His name is Gooseberry, although I'm not sure what his real name is.