Flowey

Flowey is the first major character that the protagonist encounters in ANIMALTALE. 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 bones," which are actually harmful skeleton bones, revealing his philosophy of "KILL or BE KILLED."

Apperance
Flowey appears as a sentient vulture who usually grins passively. His structure has a black head, a blue mane, and a white feathery body. Flowey can contort his face to show various expressions and can mimic the faces and voices of other characters. He mimics Toriel and Asgore 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.

Personality
Initially, Flowey operates under a façade of friendliness and politeness. He often greets the protagonist with southern slang, such as "Howdy!", calls himself "your best friend," and, like his father, appends polite words such as "gosh" and "golly" to the ends of his sentences. Whenever he drops this guise of friendliness, he often calls the protagonist an "idiot."

Flowey has a malevolent and cruel disposition, berating the protagonist for not following his "kill or be killed" philosophy. Despite this, he also criticizes the protagonist at the end of the Desert if they killed any animal. He is manipulative, devious, and a cunning planner and subtle if the circumstances require it. He retains his memories between FREEZEs because he was once able to FREEZE. He is also shown to be extremely cowardly, as he kills his former father to appease the protagonist in a vain attempt to save his own life in the Genocide Route's conclusion.

Desert Start
Flowey introduces the concept of the bullet board and calls his bones "friendliness bones."
 * If the protagonist dodges three times, his friendly act slips and he hypocritically snaps at the protagonist for toying with him.

When the protagonist runs into his bones, he announces his central philosophy. Regardless of whether the protagonist dodged Flowey's bones or not, he then attempts to kill the protagonist with an unavoidable ring of bones, but Toriel intervenes and saves the protagonist.
 * The background music lowers by one semitone each time the bones are dodged, before slowing, lowering pitch, and stopping entirely.
 * Before his third attack, Flowey screams "RUN. INTO. THE. BONES!!!" before quickly looking directly at his text and changing the "BONES!!!" in the speech bubble to "friendliness bones."

If the protagonist killed Flowey on a previous Neutral Route, he does not appear. If the protagonist spared him, he reminds the protagonist not to kill anyone. If the protagonist gained no EXP, he reminds them to befriend everyone. After resetting a Neutral Route multiple times and repeating Flowey's initial encounter, he becomes annoyed and questions if "you have anything better to do."

Desert End
At the exit to the Desert, Flowey judges the protagonist's actions up to that point. Flowey does not appear to judge the protagonist if he was killed in a previous Neutral Route.

Neutral Route
After the Ruins, Flowey will be seemingly absent until the end of Asgore's battle. However, backtracking in some rooms allows the protagonist see Flowey flying back into the sky on the edge of the screen.

Flowey also leaves a message on an Echo Anemone in the vertical room before the bridge in Coral Reef that changes if the protagonist spared or killed Toriel.

If the protagonist decides to kill Asgore, Flowey appears, destroys Asgore's SOUL, and absorbs the six bottled human SOULs. If the protagonist spares Asgore, Flowey appears and kills Asgore himself. Then, the game crashes and Flowey's battle begins after opening the game again.

After he is defeated, the protagonist has the chance to spare or kill Flowey. Flowey requires the protagonist to offer him mercy multiple times before he flees, unsure why the protagonist is being nice to him.

If the protagonist loads or finishes another Neutral Route, Flowey does not absorb the SOULs because he knows that she would rebel again. Instead, the protagonist will be able to exit the room and receive Sans's Neutral Route phone call.

If spared after his battle, Flowey advises the protagonist during subsequent Neutral Routes. If the protagonist gained EXP before his battle, he asks the protagonist to prove his philosophy wrong, as he thinks it may be meaningless. Flowey also offers unique dialogue if the protagonist only killed Asgore and tells the protagonist that she wasted everyone's time. If the protagonist earned no EXP, yet they have not met all the requirements for the True Pacifist Route, he mentions that the protagonist should get closer to one of the main characters, depending on who she previously befriended.

The protagonist can then recover their previous FREEZE file and follow his advice.

If the protagonist kills Flowey, he recognizes that the protagonist can kill before becoming "a dead vulture."

If he was killed after his battle, Flowey does not leave a message for the protagonist after the credits close, and, after a reset, does not appear until after the resolution of Asgore's battle. Flowey then berates the protagonist for thinking that killing him solved anything. He explains that he was brought back when the protagonist loaded their FREEZE file and that they still cannot achieve their happy ending.

If the protagonist nearly completes a Genocide Route but resets after killing Undyne the Undying, Flowey becomes upset with the protagonist. However, he then proclaims that the protagonist just wanted to see everything in the Underground and will eventually return to her malicious ways.

In Battle
As a vulture, Flowey uses only three attacks: a five-bone spread that slightly hone in on the protagonist's SOUL, a large ring of bones which surround the SOUL and cannot be dodged and a vertical row of bones which come from the side of the Bullet Board, from outside it. This attack is only used before his battle as Asriel Dreemurr. He can speed up the spread although the limits of his attacks and speed are unknown. Getting hit by his five-bone spread in his first encounter deals 19 damage per bullet whereas the unavoidable ring attack heals 19 HP regardless of whether it hits the protagonist. Before his battle as Asriel Dreemurr, the bullets deal 7 damage until 6 HP where it is 5.

Trivia

 * Flowey and Mettaton represent the two characters with voice actors; Flowey says "That's a wonderful idea!" at the end of the Desert on a Genocide Route in Tom's voice.
 * If the player attempts to name the fallen child "Flowey," the screen reads "I already CHOSE that name" and prevents the name from being used.
 * In Hard Mode, Flowey appears alongside the Annoying Parrot after the protagonist finishes Toriel's boss fight.
 * Flowey has the most battle models of any character; he has dozens of expressions that he uses in the battle room.
 * Flowey is the only character that begs for the protagonist not to kill him.
 * Flowey was voiced by Tom Kenny. Tom gave the voice for W. D. Leobones, SpongeBob SquarePants from SpongeBob SquarePants, various characters from The Tom and Jerry Show and Alex the Parrot from Delhi Safari.