“You and I don't get to talk as often as I'd like!”
Happy Frog is a light green animatronic frog who resembles the designs of the original animatronics from the first game excluding her top row teeth. She has magenta colored eyes and yellow accents on her jaw, fingertips, stomach, under both feet, and eyelids. Happy Frog holds a microphone, and has a yellow ball connected to her head by a rod. She has two pairs of buck teeth, green shorts, and an electric box with circuits and wires.
As her quotes from Ultimate Custom Night suggest, Happy Frog is shown to be fun loving, childlike, and innocent, although an additional feminine voice in the background is heard during one of Happy Frog's lines, painting an entirely different picture.