Haha
I have never seen a grey or a mantis man but I have seen a suspected life form that amazed me, and my cat. Going full circle I posted here 20 years ago that two globes of light slowly passed through brick walls to reveal the surprise of my life. We are electrodynamic but these things were possibly 4 dimensional and electrodynamic life forms. My cat appeard it was responding to sound but I didn't hear anything. I jumped on the couch to touch one but I was too wary to stick my finger beyond the outer glowing diffuse nebulous shell. 2 meters behind the first globe, followed the second. We have all seen amazing lifeforms but this was a one off for me. I tried to follow them but I lost them when they passed through the opposite wall effortlessly and silently.
Afterwards I was very excited yet confused and my cat had puffed up double its size in this hair raising event.