Ok I’m not entirely sure how to go about this, but I played a bit of Halo 1 on MCC (Xbox) today March 3rd, 2020. And there were some people driving around in Ghosts that were completely invisible, and no they didn’t have camo, there was no outline or “shimmer” that you have with active camo. And I couldn’t even see their player names when I looked at them (if i recall correctly). They were spawn killing and near impossible to kill unless you flipped them out when they suddenly appeared.
At the current moment i have some clips of them (that they themselves made) through Xbox. Idk if i can post their gamertags but the clips clearly show them doing some kind of cheat/bug/exploit. And in one he even looks up in the ghost and it makes a teleport noise so i think its teleporter related.
Not entirely sure where to go or what to do about this. But people like this ruin the game.