Shy Guy Tower
From the Super Mario Wiki
Shy Guy Towers (known as Shy Stacks in Paper Mario) are the third part of the Shy Guy Army in Paper Mario. They consist of four Shy Guys standing on top of each other. The Spin Smash Badge or Kooper can be used to knock them off. They use slingshots to attack, like regular Shy Guys in Super Mario RPG: The Legend of the Seven Stars.
Shy Guy Towers return under their new name in Yoshi's Woolly World. Unlike their previous appearances, the tower can't be toppled by removing a Shy Guy from the formation (However this isn't the case when Yoshi is transformed into Moto Yoshi). Often, the Shy Guy at the top of the tower holds a Bead or a Bomb.
Paper Mario profile and statistics
Names in other languages