Heartland City
Jacob was selected by Sanders to take part in a Survival Duel alongside Bernie, Ethan, Emma, and Ted against the captured Lancers Yuya Sakaki, Gong Strong, Crow Hogan and Moon Shadow. Sanders deployed Bernie and his fellow students into the "Predaprimal Jungle", and Jacob eagerly rushed into the jungle, planning to defeat the Lancers first. Jacob heard someone scream as they were defeated, and thought he recognized who had screamed. Jacob ended up teaming up with Emma, and they encountered Sylvio and Crow, challenging them to a Duel. As the Duel began and Sylvio took the first turn, another Duelist entered the Duel, but all they could see and hear was the intrusion penalty. The intruding Duelist defeated both Emma and Jacob, sealing them into cards.
Duel Academy
After Z-ARC's defeat, Jacob was freed from his card.[2]