Peita had a year in Major League Rugby with New England Free Jacks in 2022 and this season was rewarded for his form in New Zealand’s National Provincial Championship with a call-up to the Blues squad.
“Terrell has aspirations to keep improving and is a good fit for what we need. He will whack guys, is a physical player and his actions will do the talking,” said Tiatia.
“In terms of character, he ticks a lot of boxes and is diligent around his work. He is going to be a great addition to the group.”
Peita is Dragons’ second confirmed signing for next season with Tonga wing Anzelo Tuitavuki joining from Colomiers in France’s second tier.
The Rodney Parade club are looking to bring in a handful of new recruits after securing new contracts with Rio Dyer, Brodie Coghlan, Chris Coleman, Che Hope and Angus O’Brien.
“We are excited about the cohension of players we are retaining and how we can keep improving them,” said Tiatia.
Dragons will aim to end a four-year winless streak on their travels in the United Rugby Championship at Zebre on Friday (19:45 BST) before taking on Montpellier in the semi-finals of the Challenge Cup on Sunday, 3 May.