He's approximately 5'6" tall and 180 pounds. When my daughter first saw him, he had graying hair and a close cut beard. She said he had wrinkles like grandpa. The second time, he had shaved off the beard. Both times he was dressed in long pants and a button down shirt. He was wearing a knit cap. He speaks with a hispanic accent and very broken English. Remember that he has identified himself to the children as "Bobby" but his name is actually Humberto. I am unaware of any other aliases he may be using. We are monitoring trips to the park very carefully and strongly suggest that everyone do the same.