Head Slide

The Head Slide (ヘッドスライディング), also known as the Head Slide Attack (ヘッドスライディング攻撃), is a technique used by Amy Rose in all three Sonic Advance titles and by Vector the Crocodile in Mario & Sonic at the Olympic Winter Games as well as in Mario & Sonic at the London 2012 Olympic Games. It is a move where the user does a slide along the ground with the head first, to attack foes head-on.

Description
When using the Head Slide, the user must be moving forward at moderately high speed. While moving and facing forward, the user then falls down on the ground on their stomach, and slides along the ground for a short while, before coming to a standstill. Any enemy they then come into contact with while sliding are then either damaged or destroyed. In most cases, performing the Head Slide will cause the user to be enveloped in an energy field. For users such as Amy, however, performing the Head Slide will cause her to be dazed shortly.

Sonic Advance
The Head Slide, here named the Head Slide Attack, first appeared in Sonic Advance where it was used only by Amy Rose as one of her standard moves. In order to perform the Head Slide Attack, the player must perform Amy's Giant Steps (which works in the same way as the Spin Dash) by pressing down and the A button at the same time. During the Giant Step, the player then has to press in order to perform the Head Slide Attack.

Sonic Advance 2
The Head Slide appeared again in Sonic Advance 2 where it was used by Amy again, but could only be used when she was in Boost Mode.

In order to perform the Head Slide, the player must press while Amy is in Boost Mode, which can be reached by running at high speeds for a certain amount of time or using a Dash Panel. When using the Head Slide in this game, a yellowish-green energy field will form around Amy's head, and her attack range increases. Foremost however, the Head Slide allows Amy to maintain the speed she is running at and remain in Boost Mode, unlike normal attacks which causes Amy to slow down and stop moving entirely.

Sonic Advance 3
The Head Slide was once again used Amy in Sonic Advance 3. In this game, Amy can only used by the Head Slide when she is teamed up with Cream. Here, Amy must be the character the player controls, and Cream serves as the character that follows the controlled character. With Cream's influence, Amy can perform the Head Slide. The performance of the move is identical to that in Sonic Advance and looks like how it was presented in Sonic Advance 2, except Amy is instead surrounded by a yellow energy field.

Mario & Sonic at the Olympic Winter Games
The Head Slide appeared again later in Mario & Sonic at the Olympic Winter Games, as one of Vector the Crocodile's special moves. In this game, the Head Slide allows Vector to gain a quick boost of speed during several events. When performing it, he is surrounded by a green energy field and musical notes. Head Slide can be used much longer in the DS version, where for example in the Extreme Snowboarding event, it depends on a boost meter that can be filled by performing tricks. Vector can destroy Egg Pawns using this ability.

Mario & Sonic at the London 2012 Olympic Games
The Head Slide reappeared in Mario & Sonic at the London 2012 Olympic Games, once again as one of Vector's special moves, especially used as a quick boost for racing events such as 100m Sprint.