Xzibit dropped in as JC Dekker, another former convict-turned-informer in "Powehiwehi" (Episode 14, Season 5). In this episode, he was badly injured trying to break back into prison and suffered retrograde amnesia. Kono ends up saving his life from a Bulgarian criminal named Roman, and in return he gave her some love-life advice.
You can watch every episode of Hawaii Five-0 on CBS All Access. Click the links above to go right to the episode.