Bedrock players

A Bedrock player (through Geyser) cannot see a model NPC. Models are drawn with display entities, which exist only in Java Edition; Bedrock has nothing equivalent to translate them to. This is how the two games are built, not a bug.

The stand-in

So Bedrock players are not left with nothing, each of them is sent a plain player NPC standing where the model is, seen only by them. Geyser translates it, and Java players never see it.

• It marks the spot.
• It makes the NPC clickable for them: without it they could not interact at all, because the box a model is clicked through is Java-only too.
• Its look comes from /abb setskin <id> <player|url>. On a model NPC, that skin dresses only the stand-in.

It is a marker, not the model. Turn it off with:

bedrock:
  fallback: false

Normal NPCs need none of this: they are already player NPCs, which Bedrock sees.