It's very unlikely they are lying about their names. If your species can be different in an alternate dimension, why not your name, correct? The reason they didnt show up in the database is because they aren't from this dimension, and technically dont exist in your world's records. As for them entering, it's likely they crossed a trans-dimensional anomaly that linked to this dimension. Its possible that earth was closer to the portal on this side, and therefore crashed as they didnt expect that.
Zim: youāre right about the name...but why would the human be surprised to find out our names.
Dib: itās possible he might knew us in his timeline. I couldnāt imagine us being uh very subtle in our existence, ever.
Zim: Hm that could be it...the fact that their names arenāt in our database further explains that they are not from our reality, along with other obvious factors that do not match up with ours.
Dib: Trans-dimensional anomaly sure sounds like a very likely cause given the circumstances as well. What that really leaves is why.
Zim: Do they know theyāre on Earth, if they do, what use it is if itās not the same Earth in their own timeline.
Dib: The possibles are endless almost, itās making me hungry...
Zim: you ate 1 hour ago.
Dib: Oh thatās why-
Zim: that baby face of yours must be from all the face stuffing you do!
Dib: Oh whatever. I can wait. I think the forst thing we should do is ask them if they know anything about alternate realities, see what they know.
Zim: and if they try to lie about it, weāll destroy them-
Dib: Zim.
Zim: What?
Dib: We will not destroy them. We will point out that their story doesnāt make sense and ask for the truth.
Zim: we demand the truth!
Dib: Yeah sure Zim. I have a feeling theyāre not here to hurt anyone so stop being so hostile alright? Itāll make things run a little bit smoother too.
Zim: Youāve really gotten soft over the years human.
Dib:...maybe. But Iām a hell of a lot happier so I donāt mind.
Zim: You are happier this way?
Dib: I donāt think weād be where we are today if I didnāt make some changes about myself Zim.
Zim: Fine, Dib, Iāll give you this one. I will trust your somewhat questionable faith about the intruders. But of anything goes wrong, youāll never hear the end of it.
Dib: Nothing new for me, space boy.
Zim: HOWEVEEEER!! I wont hestitate to speak my amazingly amazing mind! That Noah-human isnt off the hook!
Dib: Just try to be a little more uh...sympathetic Zim. They almost died here.
Zim: Oh donāt worry, I already feel sorry for them. Theyāre lucky I donāt have them both kissing my perfect irken boot right now. And the attitude on that human- UNBELIEVABLE!!
Dib: *sigh* this is going to be a mess...
