Blarggwich

A Blarggwich, originally known as a Support Ghost , is an undead species of Blargg that first appeared in Super Mario World 2: Yoshi's Island.

Super Mario World 2: Yoshi's Island / Yoshi's Island: Super Mario Advance 3
They are rare, only appearing in Sluggy The Unshaven's Fort in their debut game. Yoshi can jump onto and freely move around atop the Flatbed Ferries carried on its head. Once stepped on, it moves along a set course, occasionally stopping and stretching upward, leading Yoshi to both traps and helpful items. A similar creature known as Roger Lift appears earlier in Salvo The Slime's Castle, which is a water spirit that is thinner, lacks eyebrows, has smaller eyes, and moves in a gentle loop in a big room.

Yoshi's New Island
Blarggwiches reappear in Yoshi's New Island under their current name. One is featured as the main gimmick of the third world's special level, Ride the Blarggwich. Another variation between two long, yellow Flatbed Ferries also appears. When the player ground pounds on one, the Blarggwich will turn red with angry, yellow eyes and stretch. While most of these are stationary, some of them between two red Flatbed Ferries are found on a track.

Super Smash Bros. series
They return in Super Smash Bros. Brawl, Super Smash Bros. for Nintendo 3DS and Super Smash Bros. Ultimate, where they appear in the Yoshi's Island stage. This one perpetually acts as an extra platform over a deep pit, and players can jump onto it to avoid falling. However, it appears only at random moments.