Frog

Frog (カエル Kaeru, Kaeru in the Japanese version) is a knight from the Middle Ages in Chrono Trigger. His real name is Glenn (グレン Guren, "Grenn" in Japanese media). He was presumably a squire under Cyrus, a knight in service of Guardia's royal family. Following Cyrus' death at the hands of Magus, Glenn was transformed into an anthropomorphic frog. Frog is met by the party in his native era of 600 AD, and will become a temporary party member when first encountered. Once this quest ends, he will not reappear until a few chapters later, making him the fourth officially recruited party member.