Robonyan F is a robotic cat that has it's body split in two colors; the right white, and the left blue. It has big cyan eyes, wrists, nose, shoulder and knee, while some other body features include gray muzzle, inner-ears, paws and chest. A yellow sphere is at the center of it's chest, and it wears a dark gray band around the stomach with a blue and white flame icon in the middle. A matching jetpack is on it's back. The tail flames are sky blue.
As this Yo-kai is an upgraded verison of Robonyan, has a very similar machine-like personality like him. As a difference, it should be said he is a bit boastful about his upgrades to the original Robonyan; however, he is level-headed enough to recognize the original's pros.
Robonyan F's abilities are very similar to Robonyan; however, him being an upgrade, his are further enhanced: for example, he can turn into a Chocobar factory rather than simply create several packs and shoot powerful missiles with enough capability to wipe out an island.
Robonyan F is exclusively obtained from digital copies of Bony Spirits, where the Key Item called the F Bell is unlocked via a code. He can be fought once-a-day inside Springdale Elementary School, in the Science Lab which is located on the right side of the second floor.
Unusually for the anime, the original Robonyan F is the first Yo-kai to permanently die as a Yo-kai in this media.
This could imply that by extension, Jibanyan will someday meet his end for real. This is still unconfirmed.
The events that lead Robonyan to become Robonyan F create what's known as a causal loop, or 'bootstrap paradox' where an object's future self is directly responsible for its own past actions; in this case Robonyan becomes Robonyan F because he had met (and grown jealous of) Robonyan F.
Robonyan F's localized name was under debate over authenticity, as his name revealed by a title card in Yo-kai Watch: Wibble Wobble under the name Model F implying the only Yo-kai which uses a name similar to that and since models deal with machinery.
However, he is referred to as Robonyan Type-F both in the Final Fantasy XIV crossover and in the dubbed anime, but an announcement regarding his and Sailornyan's availability in Yo-kai Watch 2 refers to him as simply Robonyan F, the latter of which was confirmed to be his actual name with his inclusion in the September 1st Nintendo Direct. This may imply his name was shortened due to text limitations in the game.
In other languages
ロボニャンF型 Robonyan F-gata
Same as the English name.
Robonyan 2.0 Robonyan Tipo F*
Makes reference to usually the first of major revisions when designing and creating devices or software.