Here's how the interaction between Player and Impostor should have gone:

Player: Next!

Impostor: Hey, fellow Crewmates! Remember me?

Player: Who could forget you? You've got your iconic deformed mouth and your dangerous weapons with you! You sure like to keep things consistent, just like me with my beanie!

Impostor: Well, I gotta stay recognisable to the fans out there! *Looks directly at the screen and waves happily*

Player: Anyway, I don't see any kind of paperwork that you brought along here. What exactly do you want me to sign?

Impostor: My trusty knife, of course! You're a legend, man! You finally won a game in Among Us, and now you're basically a god at Friday Night Funkin'! You're my hero!

Player: H-hero? I've never been called that before! Thanks, dude. That really means a lot to me! Tell you what, normally, I'm restricted to only handling paperwork for signing, but I'll make an exception with you. Anything for my big fan!

Impostor: Wow, I can't believe this is actually happening! *Starts squealing because why not*

Player: I'll be extra careful to not leave blood on the knife, but it would add to the overall aesthetic!

Player and Impostor: *Laugh wholeheartedly*

Player: Alright, here you go, dude. Enjoy.

Impostor: Man, how can I ever repay you? You really are a one of a kin- wait, hang on a minute.

Player: What's the problem, pal?

Impostor: I don't mean to criticise and it's a common misconception from my friends, but my name is spelt with an 'O' instead of an 'E'. Would you mind changing it real quick?

Player: Oh, sorry, man. Here, let me fix that for ya! *proceeds to amend the error*

Impostor: Thanks! Y'know, I've gotta start telling people how my name is spelt before mistakes are made!

Player: I know how you feel. It's a problem I still have to deal with. *Looks at the camera with an annoyed expression*

Impostor: Anyways, I better get a move on! It was really nice hanging out with the legend himself!

Player: Alright, take care, dude!

Impostor: *Starts to walk away*

Player: And Impostor?

Impostor: *Looks back*

Player: You look mighty fine in red!

Impostor: *Grins showing his teeth*

See GT? It isn't that hard to make Player likeable!