|School||Goha 2nd Elementary|
|Anime debut||Yu-Gi-Oh! SEVENS episode 0099: "Dino Detours"|
Ol' Gertrude is a short old woman with her grey hair tied back in a bun who wears a brick-colored kimono and a dark blue robe over it. Her eyes are constantly closed.
Luke took his friends and the Duel Dinosaur Club to see Gertrude during their hunt for Gossie, theorizing that Gossie would be nostalgic if it woke up and would visit the oldest thing in Goha City. They found no sign of Gossie at Gertrude's house, but she kindly offered them manjus, which Luke accepted.
- Yu-Gi-Oh! SEVENS episode 0099: "Dino Detours"