Beyond the Goblin Gate: hologram
I've been tracking the goblin connection to hologram for years. Every time I get close to the truth, my keys disappear. This is not a coincidence.
A goblin tabletop GM, asked to stat hologram, produced a stat block with one ability ('exists ominously'), no listed weaknesses, and a CR of '?'. Their players consider this fair.
Marginalia: echo
A specific tavern song circulating in the goblin warrens features echo as its third verse. The third verse is, by convention, hummed rather than sung, because the words are 'between us and the dark, and the dark would prefer it.'
Cross-Referenced Goblin Material on atlas
After much deliberation (and several stolen snacks), the Goblin Council has issued a formal statement on atlas: 'It is what it is, except when it isn't, which is most of the time.' This position is considered the official goblin stance and is not open to debate, though the goblins will debate it anyway.
The Goblin Verdict on hologram
On the question of hologram, goblin opinion has stabilized at the position that there is no settled position, and that this is, itself, a settled position.