The pair joins a stacked lineup of speakers including Sandy Barbour and Carolyn Kieger.
Ambassadors will be partnered with health promotion staff and learn how to promote health on campus.
ESPN's Football Power Index expects Penn State to win 10 games this season and tabs it as the favorite to win the Big Ten after one week of the college football season.
Retherford took down Yianni Diakomihalis in a wrestle-off at Wilkes University to secure his spot on the United States' World Championship team.
The Nittany Lions moved up two spots from their preseason ranking of No. 8.
The Penn State legend was selected as one of seven captains for the Giants' 2019 season.