!!!'''[[color:red:Gorō Sakurai / Spade Ace]]'''
* TheLeader: Up until Big One's debut.
** TheHero: After being demoted.
* OvershadowedByAwesome: While all the Jackers take a backseat to Big One following his introduction, Spade Ace suffers the most because of it (as he goes from being the leader to just another member of the team).
!!!'''[[color:blue:Ryū Higashi / Dia Jack]]'''
* CoolSword: Dia Sword
!!!'''[[color:fuchsia:Karen Mizuki / Heart Queen]]'''
* CatchPhrase: Do you want another? [[note]]Mo hitotsu, ikaga desu ka?[[/note]]
* GratuitousEnglish: She sometimes spouts English words or phrases like "don't shoot" or "wonderful".
* ImprobableWeaponUser: Heart Cute
* [[TheSmartGuy The Smart Girl]]: During the pre-Big One episodes.
* YouKilledMyFather: Her motive for becoming a cyborg.
!!!'''[[color:green: Bunta Daichi / Clover King]]'''
* EpicFlail: Club Megaton
!!!'''Sōkichi Banba''' / '''[[color:silver:B]][[color:green:i]][[color:blue:g]] [[color:red:O]][[color:gold:n]][[color:silver:e]]'''
* [[SixthRanger Fifth Jacker]]: The first Sentai warrior introduced in the middle of a show's run, years before it became a yearly tradition in the franchise with ''KyoryuSentaiZyuranger''. But since the main team is composed of four members instead of five, he's not a literal sixth member.
* TheLeader: Replaces Gorō as this, thus making him the first non-Red Sentai leader.
* SimpleStaff: Big Baton
* SpotlightStealingSquad: The original Jackers are reduced to supporting characters following his introduction. Even in later crossovers, such as ''HyakujuuSentaiGaoranger vs. Super Sentai'' and ''Series/KaizokuSentaiGokaiger'', it is Big One, rather than Spade Ace, who is often representing J.A.K.Q.
!!!'''[[color:gold:Daisuke Kujirai / Joker]]'''
* PutOnABus: In the same episode Big One is introduced.
** BackForTheFinale: In both, the actual final episode of the TV show and in the later ''JAKQ vs. Gorenger'' movie.