4th Grade Male Dog

Brock is a male dog in the 4th grade at Lakewood Elementary School. He often appears in various places at various times and is also seen with the Tough Customers. He has had only two speaking roles so far in the episodes Arthur Goes to Camp and Arthur's Big Hit. He was also at one time at Mighty Mountain before he along with several other kids were transferred to Lakewood. His personality is unknown at this time, but it's safe to assume that his personality is similair to everyone else who's a member of the Tough Customers.

Appearance
Brock is a brown dog and wears dark gray jeans and wears an orange shirt and has a dog collar armband on his wrist. He wears blue and white colored high tops.