HELP there's a weird guy at my house

Okay so I invited my husband's sister to come watch the notebook with me and she was with her cousin and didn't really say anything about the cousin. Well they got here and knocked and walked in and I just see this really sketchy guy in my house. she says hey this is our cousin and I was like okay and he was walking around like really looking at the stuff in the house and he's kinda shady looking and I'm concerned. they went to Wal-Mart to grab a cable and I called my hubby and was like hey you know your cousin A? and he was like well I don't really know him but he's family. I told him about how the dude looks sketchy but he's at work. he's gonna call a different cousin and get the scoop on A then text me. but his sister and A are gonna be back soon and I feel really uncomfortable with this dude being here. btw his sister is transgender if that matter she is about to start the process of becoming a male. anyway so what should I do? I don't think they are planning to stay the night but if they are I'm gonna tell them they can't. and he was weird to my dog like the first thing he did was come push him and call my dog a b******... hunny said I should call my mom. also the dude came in and started baking and I told him he can't do that here because of the birds but I just don't like it. and the first thing he wanted was the Wi-Fi password and I didn't give it to him