Hull have announced the signings of prop Mickey Paea and winger Bureta Faraimo.
The NRL pair will link up with Lee Radford's side from 2018, joining from Newcastle Knights and New Zealand Warriors respectively on two-year deals.
Former Tonga international Paea returns to the Black and Whites having become a fans' favourite during his previous two-year spell, making over 40 appearances following his move from city rivals Hull KR, before leaving for Australia in 2016.
Faraimo, a USA international, has been on Radford's radar for some time and will be a ready-made replacement for NRL-bound winger Mahe Fonua.
Head coach Radford said on the club's official website: "They're two, quality additions to our squad for next season and beyond. Mickey is someone who knows the squad really well and Bureta will add a lot too.
"We tried to sign Bureta on a few occasions in the past and we were in for him when we signed Mahe Fonua but he ended up going to Parramatta. I'm over the moon to have finally got him.
"His statistics, including his metres, are absolutely phenomenal and he's the kind of outside back who gets sets going for you.
"Mickey is very professional and he will provide a huge impact for us in the forwards. I was gutted to see him go when he left at the end of 2015 but it's good to have him back at the club."