Blue Tornado
From Sonic Retro
Blue Tornado is one of Sonic the Hedgehog's moves used in Sonic Heroes, activated by pressing while in the air during a spin jump. When Sonic lands, the technique sees him spin dash in circles around an enemy, creating a cyclonic vortex of air which knocks the opponent off their feet and flings them skywards. The enemy is damaged when they fall back to the ground, and potentially stunned.
The Blue Tornado is the only way of defeating the large turtle-robots deployed by Eggman in Casino Park and BINGO Highway, flipping them upside-down to expose their vulnerable undersides. It can also be used to send Team Sonic spiralling up poles, which is necessary to progress in some levels.