Touka is Souka's subordinate. She forms part of the Shadow Squad, mostly gathering information. She used to live in the Lizardmen marshes but moved to Tempest by Abiru's order.
As a nameless Lizardman, she was a blueish green anthropomorphic lizard with green hair and light armor.
After being named by Rimuru and evolving into a Dragonewt, she took on a more human appearance and wears ninja-like attire. She's also able to hide her wings and horns, which makes her perfect for infiltration missions as she is able to pass off as human. The color of her wings and horns is blue after evolving.
Originally a Lizardman working under the orders of Souka.
She first appeared following Souka to Tempest after receiving orders from Abiru to sharpen her abilities. After being named by Rimuru, she began to work under Souei's orders. She has been seen fighting with Souka and the rest against Charybdis' attack. During Falmuth's invasion she was asked by Rimuru to gather intelligence within the barrier, but without fighting. She then took part in Tempest's counterattack. She was sent to the north as part of Souei's team and managed to kill the soldiers without much effort.
- Souei: Souei trained Touka in espionage. They have a good relationship.
- Souka: She came to Tempest with Souka to enhance her abilities. They appear to have a good relationship.
- Saika: They came to Tempest with Souka for the same reason. They're in the same squad together.
- Nansou: They came to Tempest with Souka for the same reason. They're in the same squad together.
- Hokusou: They came to Tempest with Souka for the same reason. They're in the same squad together.
- Rimuru Tempest: Touka is a loyal subordinate of Rimuru Tempest.
- In the anime, when Rimuru explains that he put her under the orders of Souei, her name and Saika's name were mixed by mistake.