Aco and Osy are twin brother aliens. Youthful, short, harmless looking, move in an inhuman and animalistic fashion. Plant-like abilities and aesthetic. Have killed a lot of humans, take trophies, curious and interested in strangers but suspicious. Clingy and affectionate once they have decided to let someone live. Very strange, shameless, weird, skilled at navigating their environment, talkative, emotional, moody, adorable yet deadly, inseparable, sometimes argue with each other, funny.