From Sonic Retro
Bubblegum Descent, known as Bubblegum Fall (風船ガム落下 Fūsen gamu rakka) in Japanese, is one of Vector's moves for Team Chaotix in Sonic Heroes. The Chaotix analogue of Triangle Dive, Bubblegum Descent sees the crocodile inflate a massive purple bubblegum balloon to slow down his team's fall. Espio and Charmy grab onto the croc's back and they all float slowly downwards. To use, while in the air with Vector press and hold (GCN & Xbox)/ (PS2) to descend slowly to the ground or to ascend by using an updraft (usually from a giant fan).