FLOWEY'S ROLE: Watches you from afar. Battles you in genocide. in pacifist Takes the human souls successfully as you haven't gained any EXP and he can overpower you and steal the souls. Steals mettaton's parts on neutral and kills the human souls except one accidentally trying to take them from you (Which one depends on how many people you killed. If on Pacifist neutral and you choose ignore mettaton instead of healing him, it's the Green soul. In a failed genocide run, ir's cyan. In a neutral run where you kill as much as possible without starting genocide, it's blue. if you kill under ten monsters it's Orange. Above twenty is yellow soul. between 10 and twenty is purple soul. after killing all but one soul, he flees realizing his mistake. In a genocide run, He confronts and attacks you in New home. He says that while he never liked mettaton, that he think you should stop. You try to attack flowey, and the battle begins. his attacks are friendliness pellets and vines. You don't gain EXP after defeating him as he has no soul. In pacifist there are two endings, Asriel ending and Experiment ending. In experiment ending, mettaton asks you if you'd be willing to have some of your determination injected into the robots. If you accept, the robots learn how to duplicate the DETERMINATION and the barrier is broken. If you refuse, Flowey pops up with the six human souls and absorbs them, Plus he has vines capture the souls of everyone in the underground, becoming ASRIEL. A mostly normal asriel fight happens, with really only the dialogue being changed. Oh, the other thing is that you can flirt with asriel, giving you an achievement and a special scene at the end. Besides all this, he just watches from the shadows, and just gives you a glare where you'd usually meet him No u Fine go ahead you'll regret it The special scene is this: Frisk needs to go to the bathroom, and there is a bathtub in the true lab so Frisk goes in there and pulls the curtain, and you hear Flowey laughing before he says "Scared ya, didn't I? What? You're uncomfortable? sorry..." then it cuts to you speaking to Flowey outside the bathroom, which would happen if you flirted with Asriel or not. told ya
Read everything, trust me. the song "Your Best Friend" by Toby Fox. Adaptation ("You're My New Friend") (Plays during Flowey fight, briefly before Toriel when flowey pops into the ground, and when you talk to Flowey after the Asriel fight) by me. During flowey fight the pitch is down 100%