Sonic's birthday is the date of Sonic the Hedgehog's birth. Sonic's canonical age is fifteen years old.



Tails and friends throwing a surprise birthday party for Sonic.

At the start of Sonic Generations, Tails and Sonic's friends throw a surprise birthday party for Sonic. Sonic is given a chili dog as a present from Tails, but when the Time Eater appears it gets blown away (much to his disappointment). Later on, the party continues when the Time Eater is defeated and Sonic gets back his chili dog, which is still warm.

How old Sonic became is never specified during the event.

In other media

Adventures of Sonic the Hedgehog

AoSTH birthday

Sonic's party in AoSTH.

Sonic has a birthday in this series. While Sonic and Tails are vagabonds, Sonic still remembered his birthday despite no parents or a calendar to keep track of his birth.

For a gift, Tails builds Sonic a flying bike. Realizing Tails' potential with mechanics, Sonic asks Professor Von Schlemmer to make Tails his research assistant, but then Robotnik captures and impersonates him to get Tails to build his latest anti-Sonic weapon.

Sonic has another birthday party in this episode, with Tails getting some of Sonic's friends for a party.

Sonic the Hedgehog (Archie comic series)

The Freedom Fighters throw a birthday party for Sonic on his first birthday after his return from space. During the party, Bark and Bean attack the Freedom Fighters, but are easily handled by the group with the help of Shadow the Hedgehog. It turns out Dr. Eggman sent Bark and Bean to attack the Freedom Fighters, and upon finding out his plan failed, sends Croctobot to attack Sonic.

Once it arrives, Sonic laughs at the robot and calls it pathetic. As the Freedom Fighters battle the robot, Rouge and Scourge arrive on scene. Before Scourge can attack Sonic, they both, along with Shadow, are grabbed by the Croctobot. The three hedgehogs destroy the robot together. With the robot dealt with, Scourge attacks Sonic and then Shadow when he interrupts him. The other Freedom Fighters join Sonic's side, causing Rouge and Scourge to flee. With the attacks over, the group final celebrates Sonic's birthday.

Sonic Underground

Main article: Mobodoon (episode)

Sonic shares his birth date with his sister Sonia and his brother Manic. They were all born on March 4[citation needed]. This is coincidentally the same date when the portal to Mobodoon opens every four years, Mobodoon being the place of the triplets birth.

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