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Thundering is the first major character that the protagonist encounters in Undertale. Flowey serves as the main antagonist for the majority of the game, specifically the Neutral and True Pacifist routes. He provides an introduction to the mechanics of encounters by sharing "friendliness pellets," which are actually harmful bullets, revealing his philosophy of "KILL or BE KILLED."



Thundering appears as a red flower who usually grins passively. His structure has a beige androecium, 8 red petals, and a light-green stem. thundering can contort his face to show various expressions and can mimic the faces and voices of other characters. He mimics Paul and Pauline in some situations, as well as his old self at the end of the Genocide Route. He also mimics the protagonist's face before the Neutral Route's final battle.


i wonder what happens if a determined soul goes out of its body?
— entry number 8-Laurel
HE Doesn't kill you at the starts he gives you a tuTORIEL (drumbeat) but when he has the left over humans souls he trans forms into HIS GIANT ROBOT

Giant robot/Photoshop flowey


how to beat him

tom gives you two harpoons which you can't use until that fight you remember and throw them at the robot


  • rocket
  • stomp
  • (add more robot attacks)

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