The top-flight newcomers have been active in the market since winning the GladAfrica Championship and added the two highly-rated talents to their squad.
Mobbie, 27, joins from Mamelodi Sundowns and recently started both 2022 FIFA World Cup qualifiers for Bafana Bafana under Hugo Broos against Zimbabwe and Ethiopia.
The full-back is joined by the 26-year-old Parusnath who was liked with moves to SuperSport United and Kaizer Chiefs during the off-season but both moves failed to materialise.
It officially ends his eight-year spell in the Golden Arrows first-team where he emerged as one of the leading performers in the South African top-flight as he helped them finish in a record high of fourth place last season.
Tshediso Patjie (Baroka FC)
Tumelo Matona (Jomo Cosmos)
Kamohelo Sithole (TS Sporting)
Seun Ledwaba (Jomo Cosmos)
Thabo Rakhale (Marumo Gallants)
Ryan de Jongh (Bloemfontein Celtic)
Vusimuzi “Skheshe”Mncube (JDR Stars)
Nicholus Lukhubeni (loan from Mamelodi Sundowns)
Talent Chawapiwa (AmaZulu)
Charlton Mashumba (Polokwane City)
Edwin Gyimah (Black Leopards)
Pogiso Mahlangu (Pretoria Callies)
Nyiko Mobbie - Mamelodi Sundowns
Seth Parusnath (Golden Arrows)