Kamen Rider Decade: All Riders vs. Dai-Shocker

Kamen Rider Decade: All Riders vs. Dai-Shocker

Year: 2009

Runtime: 66 mins

Language: Japanese

Director: Osamu Kaneda

ActionAdventureScience Fiction

Tsukasa Kadoya is drawn across time and space back to his own Decade world, where he learns the source of his powers and his true role as the leader of the revived Dai‑Shocker. The film brings together every Heisei lead Rider—ten in total—and all the classic Shōwa Kamen Riders, assembling a roster of twenty‑five heroes for an ultimate showdown.

Warning: spoilers below!

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Timeline & Setting – Kamen Rider Decade: All Riders vs. Dai-Shocker (2009)

Explore the full timeline and setting of Kamen Rider Decade: All Riders vs. Dai-Shocker (2009). Follow every major event in chronological order and see how the environment shapes the story, characters, and dramatic tension.

Time period

Location

Hikari Studio, A.R. World, Kadoya Mansion, Dai-Shocker Castle, World of Decade

The Hikari Studio acts as the central hub where characters cross into a newly arrived A.R. World, serving as a temporary home and command center. The A.R. World alongside the Hikari Studio anchors the multiverse journey, merging realities as the Rider Battle unfolds. Key locations include the Kadoya Mansion, Dai-Shocker Castle, and the World of Decade, each tying personal history to the larger war across worlds. The castle rises from a stadium in a dramatic display of Dai-Shocker’s power, while the sewers and throne rooms mark turning points in the battle and revelations.

❄️ Sci-Fi 🕰️ Time-Travel 🏰 Fantasy

Last Updated: October 04, 2025 at 16:45

Main Characters – Kamen Rider Decade: All Riders vs. Dai-Shocker (2009)

Meet the key characters of Kamen Rider Decade: All Riders vs. Dai-Shocker (2009), with detailed profiles, motivations, and roles in the plot. Understand their emotional journeys and what they reveal about the film’s deeper themes.

Tsukasa Kadoya / Kamen Rider Decade (Masahiro Inoue)

A traveler whose memories have been erased, Tsukasa navigates a web of worlds to reclaim his past. He initiates the Rider Battle as a means to test strength and unify the Riders, while wrestling with whether his choices serve personal goals or the greater good. His journey toward reconciliation with Natsumi drives the emotional core of the story, culminating in a renewed sense of home in the Hikari Studio.

🛡️ Protagonist 🧭 Leader

Natsumi Hikari (Kanna Mori)

Tsukasa's sister figure in the story, Natsumi grapples with trust and abandonment as memories resurface. Her perception of Tsukasa evolves from suspicion to reluctant reliance as she faces Dai-Shocker’s threats. She becomes central to the personal stakes of the world-twisting conflict and seeks a place to belong amid the chaos.

💖 Ally 🧭 Seeker

Sayo Kadoya (Moe Arai)

A pivotal young ally revealed as Tsukasa's sister figure who learns of her own role within the Earth Stone’s power. Her arc moves from curiosity to realization as she discovers how manipulation and loyalty impact large-scale battles. She ultimately acts to break Dai-Shocker's control, choosing a path toward autonomy and responsibility.

✨ Catalyst 🧩 Ally

Eijiro Hikari / Doctor Shinigami (Renji Ishibashi)

A key strategist behind the scenes who embodies the manipulation and menace of the Dai-Shocker plot. He embodies a cunning, calculating presence that challenges the Riders and their plans. His actions are instrumental to the escalation toward the climactic showdown.

🗡️ Villain 🧠 Villainous Strategist

Nobuhiko Tsukikage / Shadow Moon (Ryuichi Ohura)

A formidable antagonist whose loyalties shift with the tides of Dai-Shocker’s agenda. As Shadow Moon, he embodies a dark mirror to Tsukasa’s journey, testing the heroic bonds of the Riders. His presence drives conflicts that blur lines between ally and foe and frames the final confrontations.

⚔️ Villain 🌀 Duality

Jôji Yûki (Gackt)

A complex figure whose ties to Dai-Shocker force confrontations with the Riders. His arc intersects with revenge and identity, pushing Tsukasa and friends toward critical choices about trust and destiny. His actions stall and then catalyze the climactic battles.

🗡️ Antagonist 🔧 Manipulator

Shotaro Hidari / Kamen Rider Double (Renn Kiriyama)

One half of Kamen Rider Double who arrives to bolster the Riders against overwhelming odds. His presence abroad signals the power of cross-world alliances and the unifying force of shared purpose. He contributes to decisive moments that turn the tide of the war.

🛡️ Ally 🤝 Team Player

Philip / Kamen Rider Double (Masaki Suda)

The other half of Kamen Rider Double who brings intellect and support to the Rider team. His partnership with Shotaro embodies the collaboration essential to wielding multiple Rider powers against Dai-Shocker. He plays a critical role in the strategic execution of team-based victories.

🧠 Ally 🧩 Team Player

Yusuke Onodera / Kamen Rider Kuuga (Ryouta Murai)

A Rider whose power echoes through the World of Decade, acting as a bridge between past and present rider eras. He contributes to the ensemble’s strength as battles intensify across worlds. His presence reinforces the theme of unity across Rider generations.

🛡️ Ally 🏹 Veteran

Last Updated: October 04, 2025 at 16:45

Major Themes – Kamen Rider Decade: All Riders vs. Dai-Shocker (2009)

Explore the central themes of Kamen Rider Decade: All Riders vs. Dai-Shocker (2009), from psychological, social, and emotional dimensions to philosophical messages. Understand what the film is really saying beneath the surface.

🧠 Identity

Memory loss and recollection drive the core of Tsukasa's character, forcing him to confront who he is beyond titles and powers. The narrative probes how memory shapes loyalty, trust, and purpose, especially as Natsumi and Sayo become entangled in his past. Reassembling fragments of identity becomes a catalyst for decisive choices, even when those choices risk personal relationships. The theme underscores whether true selfhood emerges from memory or from actions.

🤝 Unity

Riders from different eras and worlds band together to thwart Dai-Shocker, highlighting the power of collaboration over individual glory. The All Rider Kick and the Jumbo DecaDriver sequence epitomize collective strength overcoming singular cunning. The story emphasizes trust, alliance, and sacrifice as prerequisites for saving multiple worlds. Unity across diversely aged heroes becomes the lifeblood of victory.

🌀 Multiverse

The plot traverses multiple interconnected worlds, with battles spilling between the World of Decade and other realms. The emergent Dai-Shocker castle and shifting loyalties illustrate the instability and danger of crossing universes. The narrative uses interdimensional travel to explore destiny, manipulation, and the limits of power. The fusion of worlds tests and ultimately redefines what home means for the protagonists.

Last Updated: October 04, 2025 at 16:45

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Kamen Rider Decade: All Riders vs. Dai-Shocker Timeline

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