I know I just wrote a fic about it but I wanna expand on the idea of Wesker going feral for body writing/marking, specifically marking you with his name. This man is so fucking self-obsessed, he would love to see you branded with his name. Complete and utter ownership of you. He would get it tattooed on to your skin if you let him, so every time he fucked you he could see how devoted you are to him. If not then he'd be sitting you on your bathroom counter every morning and writing it on you himself.
The collar with "If found, please return to Albert Wesker" was another way of marking you. He'd get you a bracelet with beautiful silver charms, the letters "AW", another brand. Cover you head to toe in clothes he bought you; naturally, as your partner he knew what you looked best in. Buy you a new car with the license plate tag "P3T0FAW" or, "Pet of Albert Wesker". No one would be able to tell, but he knew you were marked and that's all that mattered. He wanted it to be impossible for you to forget about his presence, even when he wasn't able to be with you. Some may say he's too possessive, others would call him a "fucking lunatic", but he just saw it as protecting the most valuable thing in his life other than his work: You.