The Spider ability allows Kirby to utilize spider webs to trap enemies. The webs themselves linger for a few seconds after being released, and any non-invincible enemy that comes into contact with a web will be encased in a web themselves. Once trapped, enemies can either be kicked into other enemies or be grabbed and thrown. Kirby and his friends can bounce off the webs created by Spider's attacks to gain extra height in a Friend Ability called Friend Bounce.
Kirby or his friends can jump on his heart-shaped web to bounce upward, either straight or diagonally. The move is not confined to only this web; any web can be Friend-Bounced off of by pressing the jump button while over any web. They are invincible during the jump.
32 (upward), 48 (diagonal)
This ability is similar to the Poison ability from Kirby: Planet Robobot, as both of them have moves designed to set traps for enemies.
Coincidentally, both are also purple in appearance and have animal-themed headgear.
Spider is one of two Copy Abilities whose guard move is explicitly designed to damage enemies on contact, the other being Bell.
Spider, along with Animal, Cutter, and Circus, are the only abilities to include eyes as part as their design.
Skyward Web is very similar to Needle's Mega Needle.