Taking random people to the Hall of Justice is a serious security problem, but whatever. I'm sure this guy's legit. You can always trust people whose first name are initials. (Dick is grumpy for unrelated reasons.)
Dick's new friend is Childish, just like him! They play tag.
But the new kid's not a one friend guy. He plays tag with M'Gann...
... while Wally helps Dick with his homework. Aren't they adorable?