Dr. Robotnik

Dr. Ivo (Pingas) Robotnik is the primary antagonist of the Sonic the Hedgehog franchise, and as such, the main antagonist for Sonic the Hedgehog 3 Bloopers.

Characteristics
Dr. Robotnik is an obese man with a long mustache and drives around in some kind of aircraft-type vehicle. He became a popular meme on the internet thanks in large part to his apperance in the Adventures of Sonic the Hedgehog cartoon, which became a popular subject for many a Youtube Poop. In Sonic the Hedgehog 3 Bloopers, he arrives and only says "PINGAS!", but he also blurted out "NO!" and "Ow". When he appeared in the Super Mario Toy Show, he spoke normally.

Sonic the Hedgehog 3 Bloopers
Robotnik made his debut in the 2nd episode of Sonic the Hedgehog 3 Bloopers, where he fought Sonic and Tails in a boss battle. All he said in the episode was "PINGAS!", but he did say "NO!" when Sonic said if that all he could say. He did say "Ow" when he got hit a few times.

Super Mario Toy Show
Robotnik would return in the Mario Toy Show episode The Mystery Visitor. When Mario, Yoshi, and Pikachu were bored one day, Robotnik was stalking them. He turned off their game and began to utter "PINGAS!", much to their annoyance. They decided to find the source of the Pingas, which led them to their usual hangout. Yoshi began sniffing the area until he found Robotnik under the covers.

In Quest for Pingas, Robotnik explains that he needed help finding his lost Pingas. Reluctant, Mario, Yoshi, and Pikachu agreed to help him out. Power Ranger Guy eventually caught wind of this, and he, Elite, and his Pinkie Pie plush decided to head out and investigate. After hours of searching, Mario and friends were about to call it quits, but then Robotnik finally found his Pingas (which was a picture of him that said "Robotnik's Pingas"). Power Ranger Guy and Elite soon arrived, and a small scuffle ensured. Mario and Yoshi were able to retrieve Robotnik's Pingas in time, leaving Power Ranger Guy with a bunch of ponies (which he was extremely excited about).

His 3rd appearance in the 2015 Christmas special featured him going through the video game collection to see if there were any Sonic games. Yoshi would then give him an invitation to the Christmas party that Mario was throwing, and would receive a cheat code book as a gift.

In the New Years special, Robotnik was one of the guests at Power Ranger Guy's New Year's party.

Trivia

 * Robotnik would appear in 2 recent episodes of the Mario Toy Show: The Mystery Visitor and Quest for Pingas.
 * The Robotnik toy used was an old Happy Meal toy promoting the Adventures of Sonic the Hedgehog series.
 * A picture of Robotnik would be used as IronYoshi's profile pic on MetaCafe