Ironically, Prismall replaces Brett Goodes, who beat Prismall to the last spot on the Dogs' rookie list.
Bulldogs football manager James Fantasia told The Age that Prismall's AFL experience and leadership skills were suited to the role.
"Brent is a very capable young man and will be instrumental in working with our playing list and, in particular, our younger playing group," he said.
"We believe we've brought another quality person into our organisation and look forward to seeing Brent flourish in his new role."
Prismall, who played 61 AFL games in six seasons, worked with Bulldogs coach Brendan McCartney at both Geelong and Essendon.
He will also play with the Bulldogs' VFL affiliate Williamstown.
