Apparently, the Glide appears to be a personal invention in Knuckles' case rather than an ability shared by all echidnas from Sonic's world, with the exception of Tikal in the multiplayer mode of Sonic Adventure 2.
In Sonic Chronicles: The Dark Brotherhood, Shade and the rest of the Nocturnus Clan seemingly lack the ability to glide, while they are shown being able to scale walls.
Beginning in Sonic Unleashed, Sonic is able to safely skydive by using his quills to catch air. It seems like simply a new trick in Sonic's bag at first, but actually Sonic learned the technique from Knuckles in Sonic Heroes!
In Sonic Heroes, Knuckles led Tails and Sonic in Triangle formation skydive to slow their descent and ride air currents. Sonic can't actually glide like Knuckles can, but the technique is enough for Sonic to, once he mastered it, be able to safely control his descents.
抄襲Archie美漫而被版權訴訟踢出佳能並毀掉整個Archie美漫，無法成為正史的黑歷史：