Salvo the Slime

Salvo the Slime is a character in Kirby Vs. Shy Guy

Origin
Salvo the Slime originated as a boss in Super Mario World 2: Yoshi's Island. In the game he appears in, he didn't attack, but he tries to push Yoshi into the lava. Yoshi could only defeat him by throwing eggs at him until he becomes smaller. He also appears in other areas as a hidden character and holds a key inside him.

Kirby Vs. Shy Guy
In the Kirby Vs. Shy Guy series, Salvo the Slime only appears in Camp Chaos, where General Guy sneaks into his lair and Salvo blocks the way. However, General Guy held up his bazooka and said, "Bite me." It is unknown if he was killed.