Flowey

Initially, Flowey is friendly toward the protagonist. He greets the protagonist with "Howdy!", calls himself "your best friend," and, like his father, uses words such as "golly" at the end of his sentences. When he is not trying to fool the protagonist into trusting him he will stop using pleasantries and insult them.

As a flower without a SOUL, Flowey is neither human nor monster. Because he has no SOUL, he is unable to feel compassion or love, and seeks pleasure by indulging his curiosity that stems from his ability to "reshape the world" with his powers of determination. He retains his memories between SAVEs because he used to be able to SAVE himself. It is revealed in the Genocide route that, in spite of his emotional numbness, he was not always amoral and initially used his SAVEs to help others; yet as time passed and his inability to feel continued to persist, all the while he was trying to sate his evergrowing curiosity, Flowey – reluctantly, at first – decided to commit murder, telling himself that he had to know what would happen.

In the current day, 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 Ruins if they killed any monsters. He is manipulative, devious, a cunning planner and subtle if the circumstances require it.

When a situation emerges that Flowey has no control over, he may act in frustration or even sheer cowardice, the latter being shown when he kills his former father to appease the protagonist in a vain attempt to save himself in the Genocide Route's conclusion.

Appearance: Flowey is a sentient golden flower. He has a white center, six yellow petals, and a light-green stem. Flowey can show a variety of expressions and can mimic the faces and voices of other characters.