Bloominator
From Sonic Retro
Bloominator, or Tulippon (チューリッポン) in Japan, is a tulip-like badnik from Sonic the Hedgehog 3 found in Angel Island Zone. These stationary robots attack by spouting spike balls. To destroy them, it's not completely safe to jump on them, so rolling into the badnik is a better choice.
A shield can protect you from their spike balls; they bounce right off the shields.