Akane Shinjo designed Tsutsujidai, a digital world serving as her escape from real-world troubles. Collaborating with the alien Alexis Kerib, she saw her kaiju sculptures animated, gaining power to reshape this virtual environment and eliminate perceived enemies. Tsutsujidai and its inhabitants—including classmates like Yuta Hibiki, Rikka Takarada, and Sho Utsumi—manifested her desires for control and acceptance. Within Tsutsujidai, Akane possesses pale pink bob-styled hair and reddish-pink eyes. Her attire includes a white shirt, purple ribbon, dark purple jacket with pink trim, gray skirt, leggings, and black shoes. She frequently wears pink glasses featuring a cracked right lens and a communication headset. This distinct look intentionally contrasts her ordinary real-world appearance, revealed in a live-action sequence where she awakens as a mundane schoolgirl in her bedroom. Her color scheme and cracked glasses reference Transformers' Shattered Glass Optimus Prime, later homaged through characters such as Purple Wicked Convoy. Akane initially presents as a popular, talented student, maintaining a facade of kindness—exemplified by offering Yuta a special dog when he forgot lunch—while concealing profound psychological instability. She harbors intense grudges over minor slights, responding violently: Ghoulghilas attacks a volleyball player who ruined her gift to Yuta, and Dévadadan targets a teacher who bumped into her without apologizing. Her volatility surfaces in private outbursts like destroying monitors or throwing objects, noted by Alexis as "violent" behavior. Despite craving connection, she struggles with isolation, depression, and manipulative tendencies, particularly evident with Rikka and attempts to seduce Yuta. As a repli-compoid avatar, Akane possesses cat-like righting reflexes for safe landings, age alteration for disguise, and force-field-based levitation. Her artistic skill produces highly detailed kaiju models, animated by Alexis through "Instance Abreaction." She demonstrates technological acuity, operating drones and merging with systems via "Instance Domination," later aiding Gridman against threats like Mad Origin in *Gridman Universe*. Her kaiju creations include Anti (designed to kill Gridman), Mecha Ghoulghilas (to sabotage a school festival), and Nanashi (under Alexis's coercion). Her arc involves escalating conflict with Gridman and the Gridman Alliance. After confirming Yuta as Gridman’s host, she stabs him with a boxcutter—an act triggering guilt that diminishes her kaiju-creating ability. Alexis exploits her despair, absorbing her into the kaiju Zegga to fuel his own power. Rescued by Anti and freed by Gridman’s Fixer Beam—which mends her emotional wounds—Akane reconciles with Rikka, receives a pink pass case, and departs the digital world. Her awakening in reality symbolizes a return to an unidealized existence, implied as a step toward maturity. In spin-offs like *Hime and Samurai*, her age-changing ability facilitates disguises. The *Transformers Generations Selects* manga later features Purple Wicked Convoy, a character mirroring her personality and kaiju-creating traits, cementing her cross-media influence.