1. Do you mean you want to be another person? Fake KYC? Even though you might want to hide your identity as much as you can but at thesame time I don't think it's a good idea.
If you want to get the reward from a particular project it's very necessary to put your real identity because they might ask for video calls before they distribute the reward, and also providing fake information can lead to a problem for you in the future if you can't prove with the real document.
Also it is illegal act and abuse the reward/event, it's better to look for a project without KYC.