Joe White was a retired US Navy SEAL who held the rank of Lieutenant Commander and who is Lieutenant Commander Steve McGarrett's Commanding Officer as well as a father figure to Steve.
Joe made his debut appearance in the Season 2 premiere episode, Ha'i'ole where he was summoned to Hawaii by Detective Danny Williams who sought Joe's help in proving that Steve had not killed Governor Pat Jameson and Laura Hills.
During Ka Hakaka Maika'i, Joe summoned Special Agent Kensi Blye of NCIS: Los Angeles' Office of Special Projects to Hawaii to help lip-read a video file that had no audio which led Steve to discover that his father, Wo Fat and Governor Jameson were talking about someone or something named "Shelburne".
In the resulting process, Wo Fat killed Jenna before fleeing although the 5-0 team along with members of SEAL Team 9 were successful in saving Steve and bringing him back home to Hawaii.
In Pahele, Joe was brought before a board of inquiry for organizing an unauthorized military operation and retired from the Navy (with full benefits), much to Steve's distress.
It was eventually discovered that Joe had been to Japan, causing Steve to suspect that Joe was hiding something. Joe eventually revealed that he had helped Hiro Noshimuri fake his death by pretending to kidnap and hold him hostage in front of his son which was later revealed to be a plot to protect Adam from Hiro's criminal connections.
Joe later claimed to be "Shelburne" and he also told Steve that he was the one who had "murdered" Wo Fat's father before telling Steve that he hadn't told because he'd promised John McGarrett, Steve's father that he would protect Steve.
Joe eventually left Hawaii to protect Steve and his family. This later prompted Steve to leave the team albeit temporarily during Ha'alele and the H50/NCIS: Los Angeles crossover episodes, Pa Make Loa and Touch of Death as Steve sought to find Joe and discover what he was hiding, with the 5-0 team being left in Danny's care during Steve's absence. And meets his death in When the Light Goes Out, the House Is Dark and because of this. This makes Steve very mad at Agent Greer, the person who ordered him dead.
Before Steve went to knock on the door, Joe told Steve that he was sorry before abruptly disappearing. As soon as Joe was gone, Steve managed to get himself together and knock on the door, getting a shock when "Shelburne" turned out to be Doris McGarrett, Steve's supposedly dead mother.
Joe later returned in the Season 3 episode, Olelo Ho'Opa'I Make where he, Steve and Catherine were present at the funeral of fallen Navy SEAL, Freddie Hart, Joe having served as Steve and Freddie's training officer and C.O., after a mission during which Steve and Catherine had gone to North Korea to get Freddie's remains back to the U.S.
- Met Steve McGarrett when he was 18, and training at Naval Amphibious Base Coronado in California. 
- Knew John McGarrett for 34 years, even serving alongside him, and he later trained his son, Steve. 
- Joe White was forced into early retirement for using military forces and an aircraft for personal use.  (Rescuing Steve McGarrett from North Korea.) 
- Season 6 is the only season Joe does not appear after his introduction in Season 2.
- Is prior enlisted, having been a Master Chief Petty Officer when overseeing BUD/S training.
|Ha'i'ole||Ua Lawe Wale||Kame'e||Mea Makamae||Ma'eme'e||Ka Hakaka Maika'i||Ka Iwi Kapu||Lapa'au||Ike Maka||Kil'ilua||Pahele||Alaheo Pau'ole|
|Ka Ho' Oponopono||Pu'olo||Mai Ka Wa Kahiko||I Helu Pu||Kupale||Lekio||Kalele||Ha'alele||Pa Make Loa||Ua Hopu||Ua Hala|
|La O Na Makuahine||Kanalua||Lana I Ka Moana||Popilikia||Mohai||I Ka Wa Mamua||Ohuna||Wahine'inoloa||Ha'awe Make Loa||Huaka'I Kula||Kahu||Kapu|
|Olelo Ho'Opa'I Make||Hana I Wa 'Ia||Hookman||Kekoa||Pa'ani||Na Ki'i||Hoa Pili||Olelo Pa'a||Imi Loko Ka 'Uhanet||Ho'opio||He Welo 'oihana||Aloha, Malama Pono|
|Aloha ke kahi I ke kahi||A'ale Ma'a Wau||Ka 'oia'i'o ma loko||A ia la aku||Kupu'eu||Kupouli 'la||Ua Nalohia||Akanahe||Ha'uoli La Ho'omoaika'i||Ho'onani Makuakane||Pukana|
|O kela me keia manawa||Hana Lokomaika'i||Na Hala a ka makua||Pale'la||Hoku Welowelo||Ma lalo o ka ili||Ho'i Hou||Ku I Ka Pili Koko||Pe'epe'e Kanaka||Makani 'Olu a Holo Malie||O ka Pili'Ohana ka 'Oit|
|A'ohe kahi e pe'e ai||Ka Makuakane||Kanalu Hope Loa||Ka Noe'au||Ho'oilina||Ho'oma'ike||Ina Paha||Ka Hana Malu||Ke Koho Mamao Aku||Wawahi moe'uhane||Ua'aihue||Poina 'Ole||La Po'ino|
|Powehiwehi||E 'Imi pono||Nanahu||Kuka'awale||Pono Kaulike||Kahania||Ike Hanau||Ua helele'i ka hoku||Ho'amoano||Mo'o 'olelo Pu||Luapo'i||A Make Kāua|
|Fire Will Never Say that It Has Had Enough||Dog Days||Your Knife, My Back. My Gun, Your Head||No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise||At Kama'oma'o, The Land of Activities||Unfolded by the Water are the Faces of the Flowers||The Royal Eyes Rest Above||The Trail Leads To A Diving Place; Do Not Follow After||Death at Sea||The Future is in the Past||A Tall Tree Stands Above the Others||The Round Up||What is Gone is Gone|
|The Children of Kalaihaohia||A Coral Reef Strengthens Out into Land||Only the Stars of Heaven Know Where Pae Is||The Fire Blazed Up, Then Only Ashes Were Left||To Do One's Duty||No One Has Ever Died For the Mistakes He Has Made; Only Because He Didn't Repent||Kind Is the Bird of Kaiona||The Answer to the Riddle is Seen||Though the Fish is Well Salted, the Maggots Crawl||What Parents Will Do, Children Will Do||The Tough Branch That Does Not Break in the Kona Gale||Ancients Exposed|
|Cocoon||The Man Who Fell from the Sky||When the Sea Draws Out the Tidal Wave, the Rocks Where the Cowries Hide Are Exposed||On the Slope of the Cliff, Not One Jutting Rock is Hidden from Sight||Nothing More the Eyes to Search For||Is Borne on the Back; Is Borne in the Arms||The Smoke Seen in the Dream Now Rises||Birds of a Feather...||Truth Comes from the Night||When the Light Goes Out, the House Is Dark||Gone on the Road from which There Is No Returning||A Bruise Inflicted on an Innocent Person Vanishes Quickly||Those Above are Descending|
|Depressed with the Heat of Kealwalua||Made Prisoner by the Reign of the Rain||When Covetousness is Conceived, Sin is Born||Offer Young Yaro Leaves to||He Who Eats 'Ape is Bound to Have His Mouth Itch||The Octopus of the Deep Spews It's Ink||Way of the Gun||Offspring of an Owl||The Teacher, the Pupil - Let it Come Forth||A Stranger Only for a Day||The Hand is at Fault||Endlessly Pours the Rain of Waianae|