In Unofficial Sentai Akibaranger, the character known as Deka Red is not the main protagonist but rather a guest figure who appears within the context of the show's unique reality-bending narrative. This version of Deka Red is directly tied to the delusion-based powers of the Akibarangers, serving as both a tribute to and a meta-fictional extension of the original character from Tokusou Sentai Dekaranger.

The character appears in the second episode of Akibaranger during a moment of crisis for the lead character, Nobuo Akagi, also known as Akiba Red. After Nobuo learns that his battles as a hero might be nothing more than elaborate delusions, he falls into a deep depression. It is at this low point that Deka Red appears to him, arriving in a flash of light from a smartphone screen. This Deka Red is voiced by Ryuuji Sainei, the actor who originally played Banban Akaza, the human host of Deka Red, in the 2004 Super Sentai series. Furthermore, a live-action version of Sainei, playing a fictionalized version of himself, also appears in the same episode to interact with the characters in the real world, blurring the line between actor and role.

In the context of the Akibaranger universe, Deka Red serves as a mentor and a catalyst for Nobuo. He does not act as a traditional warrior but rather as an embodiment of the heroic ideals that Nobuo admires. Upon appearing, Deka Red dropkicks a despondent Nobuo in a gesture that is both comedic and motivational, echoing a famous scene from Dekaranger where the original Ban performed the same action to snap his partner out of a stupor. This action successfully restores Nobuo's confidence and his will to fight. Deka Red then addresses Nobuo as his partner, a term of deep significance from his own series, further cementing his role as an inspirational figure.

More than just a motivational speaker, Deka Red directly empowers the Akibarangers by granting them an Outrageous Power. The central mechanic of Akibaranger involves the protagonists summoning "Outrageous Powers" based on their deep knowledge of Super Sentai history. Deka Red provides Akiba Red with the Deka Wappa, a pair of giant, absurdly oversized handcuffs. This attack, which serves as the episode's finishing move, is a physical manifestation of the delusion that the Akibarangers are wielding the combined might of classic Sentai weapons. The weapon itself is a direct reference to the DekaRangers' signature finishing attack, where they restrain a giant monster with massive handcuffs.

The true identity of this Deka Red in the story provides a key insight into the series' overarching theme. It is eventually revealed that this version of Deka Red is not a dimensional traveler or a god from a machine, but rather a suit actor hired by Hiroyo Hakase, the team's scientist, to re-inspire Nobuo. While the figure that Nobuo and the audience sees is a powerful hero, its practical reality is a paid performer in a costume. This twist perfectly encapsulates the central conflict of Akibaranger: the struggle to maintain the heroic delusion in the face of a mundane and uncooperative reality.

Despite this revelation, the character's impact on the plot and on Nobuo remains genuine. The abilities demonstrated, such as the motivational dropkick and the summoning of the Deka Wappa, are classified as "delusion powers" that become real through the unwavering belief of the Akibarangers. In this sense, Deka Red functions less as a guest character with his own agency and more as a powerful amplifier of Nobuo’s own heroic will. His appearance establishes the rules for how the Akibarangers interact with the legacy of Super Sentai, showing that their most powerful techniques are granted by the heroes of the past, summoned from the depths of their own fan obsession.