Talk:Chill Block
From the article...
"Chill Blocks can also be broken by the player or large enemies such as Big Eye, Power Muscler, Press'n, Shuhorn, or Crunch Don jumping on them as well as being broken by heavy objects such as Push Blocks falling on them."
I don't think it's only large enemies that can break Chill blocks by leaping on them. In MM10 even regular sized enemies could break Chill Blocks so long as they leaped on them. If it's all enemies it should say "broken by the player or impact from leaping enemies."