The MPs include former Prime Minister and Moresby North-West MP, Mekere Morauta, Central Province Governor Robert Agarobe, Rigo MP Lekwa Gure, Wabag MP Dr Lino Tom and South Fly MP Sekie Agisa.
In a media conference in Port Moresby, PANGU Leader Sam Basil announced the addition of the five MPs.
Basil said as a major party in the Opposition, they will move to consolidate their political priorities and pathway. This is mainly focused in agriculture, women and family, church partnership, decentralisation, economic reforms, law and justice, Bougainville and governance.