History Deuteragonist / LiveActionTV

* ''Series/DawsonsCreek'': Joey Potter. She was the main female character and the main love interest of the series protagonist, Dawson. In fact, she was the only character to appear in every single episode of the show's six-season run; not even the ''title character'' has that distinction. Pacey is the tritagonist.

** From Season's 1 to 6, Lucas is the main protagonist, Nathan is the deuteragonist and Peyton is the tritagonist.

** ''Series/KamenRiderRyuki'': Ren Akiyama/Kamen Rider Knight. Arguably, ''the'' TropeCodifier of the franchise. While Kaoru, Makoto and Ryou had their fair share of screen-time, Ren is the first deuteragonist in the franchise to really be presented as equal to the protagonist in terms of narrative importance. Case in point, [[spoiler: he outlives Shinji in the finale, and remains to date, the ''only'' [[SixthRanger Second Rider]] to face the season's FinalBoss instead of the protagonist]].
** ''Series/KamenRiderFaiz'': Yuuji Kiba/Horse Orphnoch/[[spoiler:Kamen Rider Orga]]. Notably, he receives more attention in the first episode of the series than the protagonist himself. He also remains to date the ''only'' supporting character in the entire franchise to exclusively take on the role of the Protagonist Rider for ''four entire episodes''.
** ''Series/KamenRiderBlade'': Hajime Aikawa/Kamen Rider Chalice/[[spoiler:Joker Undead]]. It's enough that despite officially being the series' Third Rider to appear in the series, various media has treated him as the [[SixthRanger Second Rider]], and his battle with Kenzaki is ultimately what concludes the series.

** ''Series/KamenRiderDouble'': While both are technically the protagonist, Shotaro Hidari primarily serves as the viewpoint character which makes Philip the Deuteragonist by default.

** ''Series/KamenRiderGaim'': Kaito Kumon/Kamen Rider Baron. The focus on Kaito's narrative journey and importance to the story is only second to [[TheHero Kouta's]] as it showcases how he goes from TheRival to the [[spoiler: BigBad the show's protagonist must defeat in the climactic final battle]]. The role of the tritagonist belongs to Mitsuzane "Micchy" Kureshima/Kamen Rider Ryugen, who without a doubt, as he easily receives the most ''the'' most CharacterDevelopment out of the main cast, and the show's final battle concludes with both him and [[TheHero Kota]] fighting side by side after resolving every issue between them. The position of the tetragonist is given to Takatora Kureshima/Kamen Rider Zangetsu, who is Micchy's older brother and is given significant spotlight as he tries to contain the dangers and mysteries of the Hellheim Forest, the place that grants the Kamen Riders their powers.

** ''Series/KamenRiderZiO'': Geiz Myokoin/Kamen Rider Geiz's relationship with Sougo as well as the question of who will become the King or the Savoir is the main conflict in the first half of the series. Even once they resolve their conflict, Geiz and Sougo's relationship continues to be a prominent point of the series, [[spoiler: with Geiz's HeroicSacrifice in the end being what pushes Sougo to become Oma Zi-O]].
** ''Series/KamenRiderZeroOne'': The deuteragonist is [[RobotGirl Is]], who learns how to [[DoAndroidsDream truly feel and wholeheartedly go after her dreams]] and [[spoiler: whose death]], kicks off the series' endgame. In TheMovie, she even ends up [[spoiler: being revived and transforming into [[SuperMode Kamen Rider Zero-Two]]]]. Isamu Fuwa/Kamen Rider Vulcan is the tritagonist as alot of the show focuses on him growing out of his FantasticRacism, to the point of him receiving more CharacterDevelopment than even [[TheHero Aruto]].

* ''Series/{{Forever|2014}}: Henry is clearly the protagonist, but Jo Martinez is his equal in the policing that makes up the majority of the series.

** Galadriel is the main protagonist. The story follows more her story in one of the most tumultuous era of Middle-earth.

** ''Series/KamenRiderRevice'': Daiji Igarashi/Kamen Rider Live and his demon, Kagero/Kamen Rider Evil, serve as this. Sakura Igarashi/Kamen Rider Jeanne and her inner demon, Lovekov, play the role of series tritagonist.

** Jimmy/Saul is the protagonist.

** Kim Wexler, a fellow lawyer and Saul's girlfriend is the tritagonist. She has always been an important character but was often in the background of Saul's relationship with his brother Chuck and his AmoralAttorney antics. By Season 5 she has become centrally relevant to the wider plotlines and also has no SavedByCanon to back her up.

** ''Series/KamenRiderExAid'': Parad/Kamen Rider Para-DX. He remains to date the ''only'' character to have fought by a Protagonist Rider's side as that same Protagonist Rider within the series proper, via the Double Action XX form (while Ryoutarou and the various Imagin have fought alongside each other as Den-O, those instances only take place in the movies). Also, their Rider names parallel one another, both containing a two letter abbreviation typically found in relation to games in their names (e.g. EX-aid, Para-DX).

** ''Series/KamenRiderBlade'': Hajime Aikawa/Kamen Rider Chalice/[[spoiler:Joker Undead]]. It's enough that despite officially being the series' Third Rider to appear in the series, various media has treated him as the [[SixthRanger Second Rider]], and his battle with Kenzaki is ultimately what concludes the series..

** ''Series/KamenRiderFourze'': Kengo Utahoshi [spoiler: aka the Core Child.]]

* ''Series/MightyMed'': Kaz and Oliver as equal protagonists with Skylar as the deuteragonist, with Alan the TokenEvilTeammate tritagonist, Horace the BigGood tetragonist, and Gus the ComicRelief sidekick.

* ''Series/FamilyMatters'': After Steve Urkel becomes the BreakoutCharacter and the protagonist, Carl (the original protagonist along with Harriette) becomes the deuteragonist, since he still gets B-Plots even when Steve is not involved. Laura is the tritagonist and Steve's love interest. Laura's brother Eddie is the tetragonist. Harriette becomes the ''pentagonist'' once Steve takes over as the protagonist.

** Ignacio "Nacho" Varga is the tetragonist. Starting out as more of a minor antagonist, Nacho quickly became the fourth most prominent POV character with his own running subplot that gradually became more intertwined with the main plot. It usually is his actions that lead to a major shift in the storylines involving the other main characters.

** Kim Wexler, a fellow lawyer and Saul's girlfriend is the tritagonist. She has always been an important character but was often in the background of Saul's relationship with his brother Chuck and his AmoralAttorney antics. By Season 5 she has become centrally relevant to the wider plotlines, and also has no SavedByCanon to back her up.

** ''Series/KamenRiderZiO'': In the first half, the position belongs to Geiz Myokoin/Kamen Rider Geiz as it is his relationship with Sougo as well as the question of who will become the King or the Savoir is the main conflict in that portion of the series. Even once they resolve their conflict, Geiz and Sougo's relationship continues to be a prominent point of the series, [[spoiler: with Geiz's HeroicSacrifice in the end being what pushes Sougo to become Oma Zi-O]]. In the second half, the role of the Deuteragonist is given to Tsukuyomi/[[spoiler:/Alpina/Kamen Rider Tsukuyomi]] as that part of the show revolves around her missing past and her relationship with the overall BigBad of the storyline, which cumulates in her [[spoiler: becoming a Kamen Rider herself.]]

** ''Series/KamenRiderFourze'': Kengo Utahoshi.

** ''Series/KamenRiderRevice'': Daiji Igarashi/Kamen Rider Live and his demon, Kagero/Kamen Rider Evil, is this to Ikki Igarashi and Vice/Kamen Riders Revi and Vice/Kamen Rider Revice. Their little sister Sakura Igarashi/Kamen Rider Jeanne and her inner demon, Lovekov, play the role of series tritagonist.