Mr. Saturn is pretty popular. He even has his own plush toy.
Mr. Saturn (どせいさん, Dosei-san) are a friendly species of characters in Mother 2/EarthBound as well as its sequel Mother 3. They are found primarly in the Saturn Valley portion of Eagleland. They resemble large heads with feet, an oversized nose, cat-like whiskers and a bow on a single hair. They speak in a unique font used only with them. In addition, they all are identical and called Mr. Saturn, save for the doctor, Dr. Saturn.
Mother 2/EarthBound
A clay model of Mr. Saturn for Earthbound.
During the events of the game, the party is brought to Saturn Vally. Many Mr. Saturn have been kidnapped by the forces of Giygas, the primary antagonist in the game, and been forced to work in a factory. They produce Fly Honey for a sentient pile of sludge known as Master Belch. Ness, Paula, and Jeff liberates the Mr. Saturn after defeating Master Belch. Later in the game they assist Dr. Andonuts and the Apple Kid in making Phase Distorter the party uses to reach Giygas for the final confrontation.
Mother 3
The Mr. Saturns once again appear in Saturn Valley. This time, the Pig Mask Army have taken over the valley looking for information about the seven needles. Lucas, Kumatora and Boney rescue several Mr. Saturn from being tied up by a Pig Mask Lieutenant, as well as their friend Duster, who had been separated from them. After saving them, the Mr. Saturns reveal that they do know where the needle is, and precede to take Lucas to it.
Once again, the Mr. Saturns show technological skill. They've modified a Pork and Bean transport, as well as created the Saturn Rider. After the Pig Masks destroy the exit from Saturn Valley, they help Lucas make a flying device with birds and a cage. One of them takes the Badge of Courage from Lucas to shine it. When he returns it, it is revealed that it was the Franklin Badge.
Super Smash Bros. Series
Look closely and you can see that the table resembles a Mr. Saturn.
Begining in Super Smash Bros. Melee, Mr. Saturn are available as an item. They appear on the stage and walk around for a bit. If they are picked up they can be thrown as a projectile. The cause minor damge and no knock back. In addition, they can be caught in midair by the oppenent. They reappear in Super Smash Bros. Brawl. In addition, Lucas's entrance is the Saturn Rider, a Mr. Saturn shaped tea table that can be ridden like a horse, from Mother 3.