Though this is his first onscreen appearance, the character is always present since the start of the series as he also serves as the storyteller of the King-Ohger legend. A pacifist who dislikes conflict, he tries to remain neutral in the battles between the King-Ohgers and the Bugnarak, but his true intentions are shrouded in mystery. As previously reported, he transforms using the transformation sword Kumonoslayer and the Change Kumonos Key. He also uses the Venomix Shooter as a weapon and spider silk to fight.
Ikeda comments that because Jeremy prides himself as a storyteller, he has a unique way of communicating, thus forcing Gira and the others he meet to "read between the lines". As a result, he cannot communicate smoothly with those around him, and he is difficult to understand. More on Ikeda, he is also part of the same agency as Kohaku Shida, who previously played Haruka Kito/Oni Sister in Avataro Sentai Donbrothers. That said, he was able to meet with her and even practice some lines with her.
[Additional details from Natalie]