true fresh can only speak when in a host (through their voicebox)  fresh sans cannot  speak without a host, he currently has no host. Upon possessing their souls (hostifying)  he turns the hosts into a vibrant, hip 90s version of themselves. The most iconic form  is a Sans, often depicted with colorful clothes and sporting a bright red cap backwards. The possessed victims share the iconic YOLO sunglasses, which hide the infected soul in their eyes that is slowly being drained by the parasite