Both Delaney Radin and Maggie Driver are expected back next season.
Potthoff is the second former player to join the Nittany Lions staff this week.
Shilov is the third Penn State hockey commit this week.
Cerrato signed with the Hurricans' AHL affiliate in March.
Fruchtl has been on the Penn State athletic staff since 2021.
The incident came on the same night Gavin McKenna was charged with felony assault.