In the Perfect Pacifist AU, Flowey often makes his face look like Asriel Dreemurr’s face, since he gained back some of his compassion following the fight between Asriel and Frisk, after he shattered the barrier by releasing all the Souls he had once absorbed.
He is still a bit of a jerk, and can be sassy, but he is nonetheless happy that Chara is back. He told Toriel and Asgore, his parents, everything that happened to him, and they comforted him as he cried.
“Howdy, I’m Flowey, Flowey the Flower.” Flowey’s parents, Toriel and Asgore, now knew of his true identity as Asriel Dreemurr, their biological son, since he had told them everything. He usually had a face that looked like Asriel’s even though he was still Flowey. “I’m just glad… Chara is back.” He was still kind of a jerk, but he had learned to ease up and not be so vile due to the power of everyone’s Souls, before he had released them all to shatter the barrier.