Giant Realistic Flying Tiger, also known as GRFT, is a major character in Uncle Grandpa. She is a large, realistic tiger who can fly by farting rainbows. She is Uncle Grandpa's other companion along with Belly Bag. She communicates by roaring. She is voiced by Grey Delisle in the episode "Guest Directed Shorts".
Giant Realistic Flying Tiger is a real photo of a tiger. She is a big orange and white Siberian tiger with black stripes and she farts rainbows when she flies. She has green-yellow eyes, but sometimes they change color such as blue.
Giant Realistic Flying Tiger acts like a mix between a tiger, a house cat, and stereotypical teenage girl. She is loyal, kind and expressive. She is quite short-tempered at times.
- Her mug has 'GRFT' on it.