Undergoing further evolution, a powerful new monster emerged, one with the body of Biollante but with the mind of Godzilla: Biollante Harvest.
Powers / Weapons
Vine tentacles
Biollante Harvest can extend its vine-like tentacles to lasso a target and drag them towards itself; any other monsters within the vicinity also become ensnared and pulled. The unfortunate target is not only momentarily stunned, its attack speed is also temporarily reduced.
The tentacles can also transform into sharp spears to impale enemies.
Heat ray
From its secondary Godzilla skull-like mouth, Biollante Harvest can fire a blue heat ray with a wide area of effect.
Spore beam / Sap / Flammable sap
The tentacles can emit a Spore Beam attack, notably the mawed vines, while Biollante Harvest can discharge various projectiles depending on the color of light its body emits: when glowing orange, it shoots sap; when glowing yellow, it shoots flammable sap; and when glowing blue, it fires heat rays.
Background and Trivia
Made its series debut in May 2026 as a playable unit in the 61st season of Godzilla Battle Line, in the season titled: "Threatening New Forms: RE:BOOT MONSTERS Arrive!"
Was introduced as part of Phase 1 of the "GODZILLA RE:BOOT MONSTERS" project alongside Destoroyah (Super Dragon Form).
Some of its abilities can be found in concept artwork dated between November 2025 through January 2026. These include the "spore beam" (胞子ビーム - Hoshi Bimu), "sap" (樹液 - Jueki), "flammable sap" (可燃性樹液 - Kanen-Sei Jueki), and "heat ray" (熱線 - Nessen). The design was also referred to as Biollante "Plant Beast King" (植獣王 - Ue-Ju-O) early on.
As revealed during the 19th GojiBato Summit YouTube livestream held in May 2026, veteran Godzilla monster designer Shinji Nishikawa was in charge of the design. The game's producer Ryosuke Sato took the lead on the "GODZILLA RE:BOOT MONSTERS" project and worked closely with Nishikawa, refining details and constantly proposing ideas and questions. His primary request: to amplify both the plant-like elements of Biollante and the Godzilla elements in this modernized design.
The reason for choosing "Harvest" in the name was two-fold: first and foremost, it had a sense of coolness; and second,
in English, the term carried connotations of gathering crops or the act of harvesting itself, suggesting a sense of maturity. Nishikawa was consulted on the name choice before it was decided.
The dorsal fins were colored purple since Nishikawa wanted to add a distinct visual accent specifically to the fins. The color purple was used in various places on the Plant Beast Biollante suit, and coupled with Nishikawa's mental image of Biollante being primarily green with a hint of purple, the coloration cemented itself on the final design.
Biollante was also chosen not just because Nishikawa was the Godzilla Battle Line team's first collaborative artist during the 1st year anniversary, but because no new Biollante units had been introduced in the game in a long time.
In an interview hosted on Denfaminico Gamer, Shinji Nishikawa talked about how he focused primarily on emphasizing Biollante's "overwhelming sense of scale" and "its bizarre form, a mixture of plant and animal" when designing Biollante Harvest, as well as being mindful of how it would appear as a functioning unit in Godzilla Battle Line, hence the rearrangement of Biollante's glowing belly now appearing as circular organs around the neck. He wanted to avoid making an evolution that merely looked closer to Godzilla, and instead opted to "add" elements to Biollante to bring out its individuality.
Noriyoshi Ohrai's illustrated poster artwork for Godzilla vs. Biollante (1989) served as a key inspiration, utilizing the "petals" that Koichi Kawakita originally rejected from early designs of Biollante's Plant Beast form. Nishikawa also wanted to express how Godzilla's characteristics were beginning to manifest, both inside and out, by having Biollante grow legs, becoming covered in patches of black skin, and using a secondary Godzilla-like mouth to fire heat rays - a weakness that Biollante now used as its strength. To emphasize the monster's maturity, the body color was changed from solid green to a tree-like brown, in addition to accenting the petals on its body a different color.
In an interview with Shinji Nishikawa and Ryosuke Sato from Dengeki Online, Nishikawa described how Biollante Harvest was a concept that "looks like Biollante, but has the mind of Godzilla," and that the form was constructed from there. Sato also chimed in on how the final design of Biollante Harvest took some creative liberties when translating Nishikawa's finalized concept image into 3D. The early model's rose-like structures around the face and mawed vines looked a little too fleshy, and the dorsal fins weren't as pronounced. Sato was adamant in capturing the texture of the roses as seen in Noriyoshi Ohrai's poster artwork, while also ensuring the monster still looked cool when viewed from above.
In an interview conducted by AUTOMATON, game producer Ryosuke Sato met with Shinji Nishikawa regarding the RE:BOOT project, but hadn't really discussed any specifics. However, Nishikawa had already quickly drawn a large number of rough drafts, with Biollante Harvest being among them. Due to Nishikawa's attachment to Biollante and him basically being synonymous to the monster, Sato decided to refine the design of Biollante Harvest and release it alongside Destoroyah (Super Dragon Form), another monster design that Sato admired at first sight.
The mention of Biollante Harvest's tentacles transforming into spears can be found in an interview between Hobby JAPAN Web and Shinji Nishikawa.
In the beginning stages, Shinji Nishikawa and Ryosuke Sato struggled to determine which direction to take Biollante's design for its "Harvest" evolution, especially when considering the top-down view of Godzilla Battle Line's gameplay. This is when Nishikawa decided to go in a "bold" direction and incorporate rose-like petals into the design. While he felt guilty incorporating these elements that Koichi Kawakita was against using, Nishikawa recalled Noriyoshi Ohrai's poster illustration and thought that by incorporating that striking imagery, he could make a working design, especially when taking the jagged leaves of Biollante and arranging them into shapes that looked like Godzilla's spines: "It looks like Biollante on the outside, but the inside is essentially Godzilla. I wanted to symbolize that kind of concept." These details and more were shared in a Special Conversation YouTube video featuring Nishikawa and Sato.
