If an alien crashes on Earth, does it become a ghost?

We ARE upset. And we are real. With that slithery, whispery voice from nowhere, Devon jumped, and he flicked the half-burned joint at Marius, sitting on the ground across from him. “Dude!” He scrambled to retrieve it “What the hell? That could’ve burned me.” But then, forgetting the injury, took a long pull before blowing the smoke out the small attic window. “Did you hear that?” Devon now fully faced across from them, staring toward the dark corner of the attic. “Hear what? A ghost?” He went to laugh but then coughed because of it. “Or did you mean alien ghost?” He continued to cough-laugh at him. We will not tolerate this, hissed the voice. Tell your friend that alien ghosts… are real. “That! All of that! Didn’t you hear it?” Devon pointed around randomly toward the empty attic. “You play too much.” Shaking his head, Marius extended the joint to Devon; but then paused, assessing Devon’s face before he decided to bring it back to his own lips. He sucked till it turned bright red. Devon Reginald Roberts, hissed the voice. We need to hear you tell him… alien ghosts are real. Then, in the far end of the attic, emerged faint, translucent shapes – a humanoid figure with a bulbous head, a fearsome snake-like creature that hissed as it approached, and an… athletic looking panda? “Uh, man…” Devon feebly raised his finger directly in front of them. “Seriously?” asked Marius annoyed. But when he turned toward his friend, he was surprised to find he wasn’t joking. “Bro, you feeling all right?” “Marius.” Tell him we are real, said the snake-like creature. “I need you to know…” The ghosts were edging closer. Tell HIM! “Dude! Ghosts are real man. Ghosts are—” The FULL truth, came the hiss. Devon paused. “Alien ghosts are real.” The look of fear and uncertainty in Devon’s eyes… Marius tensed, pausing, then looked intently toward the other end of the attic. “What are you…” “Bro! What?” Devon’s wide grin turns into deep laughter. “I’m just messing with you. Why are you so gullible when you’re stoned? Alien ghosts? Really?” Marius flicks the joint at Devon. “You piece of shit.” I thought we had him! hissed the snake-like ghost, Essesstes. You’re not supposed to TELL them we’re real, said the bulbous-headed humanoid ghost, Stanex. The first step is to slowly reveal that we’re real. Fucking earth, said the athletic panda ghost, 7780. What the hell kind of afterlife uses the collection of human souls for payment of transportation? You’re too pessimistic, said Essesstes. I’m sure we’ll get the hang of it. Stanex dropped his head with a sigh, and it struck the hanging lightbulb. “Whoa,” said Devon. “What was that?” Above them, the lightbulb had suddenly started swinging back and forth wildly. “Probably some science shit or something,” said Marius. “Let’s get out of here and get a burger or something.” He took one more hit then threw the roach out the window. Ssssss, hissed Essesstes in excitement. With a slap of her tail, she made one of the boxes jump. Devon let out a little scream. Then quickly (and deeper): “Yeah man, let’s bounce.” As the two young men scurried down and out of the attic, 7780 looked at his two stranded compatriots. Oh. I think I can work with this.