Are gray aliens evil or good?

I�ve heard a lot about them but the thing is some ppl say theyre evil (mutilating humans), some say theyre just scientists who do their thing without emotions but also without causing unnecessary suffering or pain, and others say they care about us and teach us things (like telepathy) so that we can take the next step in the evolutionary chain. what do u think (pleez abductees answer this question). Do u hav any tips on how to get abducted ?