Hollywood actor Steven Yeun appeared on The Return of Superman to entertain William!
On the August 20 episode of KBS2s The Return of Superman, Steven Yeun visited Sam Hammingtons place to surprise the father and son.
In an attempt to conceal his identity, Steven Yeun rang Sam Hammingtons doorbell as a pizza delivery man. When Sam Hammington recognized the actors face, he couldnt contain his shock and stared at Steven Yeun in awe. However, little William burst out in tears at the sight of an unfamiliar visitor. Luckily, William let his guard down when he saw Steven Yeuns adorable gift.