because he is actually 96 years old. His pictures look great because they're fake. So when he meets his dates they are shocked when they see a pile of wrinkles, pruney lips, a flannel shirt and an old cigar.
Coz she's the Lilly who runs the K9 department of District 9. Everyone's scared shitless of her, especially the men. She's more muscular than them and sics her dogs on them if they get out of line.