First, Damir Hamlin came out on the set of the "Masked Singer" on Fox.
Then, the now 8-year-old sat talking to Elmo during the show's "Sesame Street" episode airing Wednesday night at 8 p.m. ET. Elmo asked Hamlin his name and who he was there with.
"My brother," Hamlin responded in a preview of Wednesday night's show, with the surprise guest then revealed as Buffalo Bills safety Damar Hamlin.
The brothers make an appearance on the episode taped in late January, originally Hamlin's first public appearance since suffering cardiac arrest during the Bills' regular-season game against the Cincinnati Bengals on Jan.