Locky

Locky (ルッキー) is name given to small bald eagles, that made first appearances in the 16-bit version of Sonic the Hedgehog 2 and later in Sonic Spinball. Locky is one of Sonic's animal friends who gets captured by Doctor Robotnik and imprisoned inside badniks as their life sources.

Sonic the Hedgehog 2
In Sonic the Hedgehog 2, Locky can be found in Chemical Plant Zone, Hill Top Zone, Metropolis Zone and Wing Fortress Zone. If the player also manages to get all seven Chaos Emeralds in the game, the herd of Lockies will replace Flickies, who fly behind Tails on the Tornado and flying Super Sonic.

Sonic the Hedgehog Spinball
Locky later appears in Sonic the Hedgehog Spinball as an animal friend that can be released from Doctor Robotnik's badniks. He is featured in every level of the game, including Toxic Caves, Lava Powerhouse, The Machine and Showdown.

Trivia

 * Although it could be a coincidence, Akinori Nishiyama, one of Sega's employees in Sonic the Hedgehog 2 stuff has been credited as "Locky P" on Special Thanks.