Characters: J.A.K.Q. Dengekitai
Gorō Sakurai / Spade Ace
- The Leader: Up until Big One's debut.
- The Hero: After being demoted.
- I Love Nuclear Power
- Overshadowed by Awesome: 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).
- Morph Weapon: Spade Arts
Ryū Higashi / Dia Jack
Karen Mizuki / Heart Queen
- But Not Too Foreign
- Catch Phrase: Do you want another? note
- The Chick
- Gratuitous English: She sometimes spouts English words or phrases like "don't shoot" or "wonderful".
- Improbable Weapon User: Heart Cute
- Selective Magnetism
- The Smart Girl: During the pre-Big One episodes.
- The Smurfette Principle
- You Killed My Father: Her motive for becoming a cyborg.
Bunta Daichi / Clover King
Sōkichi Banba / Big One
- The Dandy
- 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 Kyōryū Sentai Zyuranger. But since the main team is composed of four members instead of five, he's not a literal sixth member. As such, he is the Trope Maker for Sentai, though Goranger provided the Ur Example.
- Hiroshi Miyauchi
- The Leader: Replaces Gorō as this, thus making him the first non-Red Sentai leader.
- Master of Disguise
- Simple Staff: Big Baton
- The Smart Guy
- Spotlight-Stealing Squad: The original Jackers are reduced to supporting characters following his introduction. Even in later crossovers, such as Hyakujuu Sentai Gaoranger vs. Super Sentai and Kaizoku Sentai Gokaiger, it is Big One, rather than Spade Ace, who is often representing J.A.K.Q.
- To put it simply, Soukichi was Tommy Oliver before he existed. Interestingly, both were white rangers in their show's second season.
- The Strategist