Mobs only can have number on name, and get error when try to give letter.
Names need to be valid json in a nbt string, eg
CustomName:"{\"text\":\"hi there\"}"
1 is valid json, a is not, but "a" is.
1
a
"a"
Reporter: migrated
Assignee: (Unassigned)
Created: 2018-01-30T18:20:13Z
Updated: 2025-04-14T21:11:36Z
Resolved: 2018-02-09T03:15:42Z
Confirmation Status: Unconfirmed
Affects Versions: Minecraft 18w03b
Retrieved 2026-10-11T02:45:39Z
Names need to be valid json in a nbt string, eg
1is valid json,ais not, but"a"is.