Forbidden Picture on the Ground (禁断の地上絵 Kindan no Chijōe) is the tenth episode of Ultraman Dyna.
3 years ago, Dr. Akizuki was exploring the Andes mountain range when he suddenly stumbled across an ancient device.
3 years after that, in present day, a young boy is playing in Sennen Town when he accidentally wanders onto the Akizuki residence. To his horror he finds three demonic figures performing a ritual in the garden. The three kaijin had summoned the kaiju Dexador over the skies of the Andes region. Two Passion Red jets were deployed but were swiftly annihilated by the kaiju; and Dexador vanishes without a trace. After observing visual footage relayed by one of the jets, Kariya notices that the assailant bore a striking resemblance to the geoglyph Dexador of the Andes region. At that moment, the young boy had called Super GUTS and told of the kaijin ritual. It is then that Kariya learns that this ritual had occurred in the property of his former teacher. Kariya heads to Sennen Town for an investigation.
At first the Super GUTS officer is warmly welcomed. However, his meeting with Dr. Akizuki and the conversation they shared had planted seeds of doubt in Kariya's head. He eventually leaves but becomes increasingly suspicious. He returns to the house and sneaks in. Kariya, to his bemusement, then finds the three Akizuki family members locked inside a room; but before the trio could warn Kariya, the Zenekindarls managed to capture him as well. The real Dr. Akizuki informs Kariya that the Zenekindarls are able to copy human DNA and that he had been conversing with fakes. It is also here that it is revealed that the device the researcher had found three years prior was a Zenekindarl cloning device; and that he had accidentally revived three of them. In ancient times, the Zenekindarls ruled the Earth using three geoglyph kaiju.
Kariya contacts Super GUTS and briefs them on the situation. Ryo is sent to rescue the trapped individuals while the rest of the team embarks on the GUTS Eagle. They managed to destroy all of the kaiju as they were developing. However, the Zenekindarls had managed to focus their powers to revive Dexador because Super GUTS let their guard down after thinking they had won. When it is apparent that even Alpha was not fast enough to catch up to Dexador, Asuka transformed into Ultraman Dyna. Though it was a losing battle for the Ultra, he managed to defeat the geoglyph kaiju once Ryo and Kariya killed the three Zenekindarls controlling Dexador.
Later that night, Dr. Akizuki confesses to Kariya that the incident with the Zenekindarls had traumatized him and that he no longer wanted to research geoglyphs. Though, with much persuasion from Kariya and support form his wife and daughter, the professor eventually comes around to the heartfelt decision that continuing his research would be for the greater good of humanity.
- Shin Asuka (アスカ・シン Asuka Shin): Takeshi Tsuruno (つるの 剛士 Tsuruno Takeshi)
- Gousuke Hibiki (ヒビキ・ゴウスケ Hibiki Gōsuke): Ryo Kinomoto (木之元 亮 Kinomoto Ryō)
- Toshiyuki Kohda (コウダ・トシユキ Kōda Toshiyuki): Toshikazu Fukawa (布川 敏和 Fukawa Toshikazu)
- Ryo Yumimura (ユミムラ・リョウ Yumimura Ryō): Risa Saito (斉藤 りさ Saitō Risa)
- Kouhei Kariya (カリヤ・コウヘイ Kariya Kōhei): Takao Kase (加瀬 尊朗 Kase Takao)
- Tsutomu Nakajima (ナカジマ・ツトム Nakajima Tsutomu): Joe Onodera (小野寺 丈 Onodera Jō)
- Mai Midorikawa (ミドリカワ・マイ Midorikawa Mai): Mariya Yamada (山田 まりや Yamada Mariya)
- Dr. Akizuki (アキヅキ博士 Akizuki hakase): Daisuke Kodera (小寺大介 Kodera Daisuke)
- Kiyomi Akizuki (アキヅキ・キヨミ Akizuki Kiyomi): Yuuko Hana (花悠子 Hana Yūko)
- Shoko Akizuki (アキヅキ・ショウコ Akizuki Shōko): Mizuki Kanno (菅野美寿紀 Kanno Mizuki)
- Narrator (ナレーター Narētā): Yuji Machi (真地 勇志 Machi Yūji)
- Ultraman Dyna
- Flash Type
- Miracle Type
- Ultraman Dyna Volume 3 features episodes 9-12.