Mysterious Creature

Mysterious Creature is a glowing segmented worm-like creature that was put in the game as an Easter egg. It's a reference to a previous game from the developer ThatGameCompany.

Alternative names:


 * Flow Creature (after the game it's from)
 * Glowworm

Occurrence, appearance, behavior
Mysterious Creature can be seen in the Whale Room swimming behind the cloth banners, or in the lowest gallery at the bottom of the central tower. One of them will spawn in the Tower level if, upon completely filling the Tower with magic goo, you jump back in and swim to either spawn area. Only one of them spawns in any given play-through, depending on which area you visit first (the other area will remain empty).

The two creatures, whilst visually identical at first glance, are actually two different mesh objects; in game files one model is called "Flow Hunter" and another "Flow Creature".


 * Flow Hunter has four distinct flippers (or perhaps fins) and spawns in the Whale Room;
 * Flow Creature looks more like a worm, and spawns at the bottom of the tower.

Interaction

 * If chirped at they'll sometimes respond with a distinct multi-tone chime
 * When touched for the first time they'll swim to the Wayfarer and attempt to "bite" (it's harmless), then retreat to their normal location.
 * Interacting with either of them for the first time will unlock the Ancestors trophy on platforms that support this feature.

Special cases
They are both special :-)

Riding The Whale With The Flow Creature
Here is a very special experience shared by a fellow player David Moore.

Trivia

 * Although only one Mysterious Creature can be seen in the Tower normally, until they spawn they both sit out of bounds and can be reached by a highly experienced player; that's how we know there are two creatures not just one spawning at either location.
 * All that is necessary to enable Mystical Creature spawning is to activate the last glyph at the top of the tower (the one after the ribbon bridges, it shows the Sunken City slide story).

Abusing the biting behavior

 * You can make the creature chase you, either in or Out of Bounds. You need to trigger the bite, but avoid getting bitten, quickly flee from the creature. That way it is possible to bring the creature to other places. Example: quickly fly through the gallery at the bottom of the Tower where the creature circles, touch it while flying by. It will start chasing you in the goo outside the gallery. It can go as far as needed until it's able to chew on the Wayfarer. See video above.

Quotes
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