Worm was a serpent-type colossus like Phalanx, Hydrus and Dirge. It had a long body with a thin section near its head which it could use to bend itself. There was fur on both sides of its body, suggesting that Wander could climb from either side. It also had a giant mouth, and it's likely that it would try and feed on Wander.
The flower bulb is the section of a plant located underneath the soil, at its root. Although it's unknown if that is what Ueda meant for sure, it's possible that Worm's weakpoint was located at its base, underneath the sand.
Many theories over the years have assumed that the text was referring to its head. However, since there's no fur on it, places to grab, or any indication that it is a weak point (such as a texture similar to those of Quadratus' hooves and Basaran's ankles), it is very unlikely. The space inside Worm's mouth is small and dark, and wouldn't work well in a game such as Shadow of the Colossus. Besides that, there isn't any other information, making this one of the most mysterious unused colossi.
The majority of the evidence lies on the combination of textures listed in Dune, which are mostly only found on the northern side of the Forbidden Lands in early development; such as a texture exclusive to only 'G1' and 'Dune' named "mk_drygrass1", coupled with sand and cliff textures being exclusive to the northern desert. Dune also had a separate model related to it named "dune_par_erea_gate", with "par" possibly being short for "Parthenon", assuming that the Parthenon was supposed to be located in 'H1' before it was moved to 'G1'. Moving Parthenon's model to 'H1' had the valley at the end of the arena match perfectly with the valley from quadrant 'I1', meaning that Parthenon was indeed moved one quadrant west. There existed various 'gate' type models that connected certain arenas to the rest of the world, and only the gate-type models close to Parthenon have "par" in their name; such as "geyser_par_erea_gate", when Basaran was still located in 'I3'.
An interview with the development staff of Shadow of the Colossus released by the Japanese graphical design company CG World contains a drawn bird's-eye view map showing, among other things, the rough shape of the G1 quadrant before Argus was moved into the site. The map proves that G1 used to consist of a large, circular pit encircled by sand dunes, with a narrow pathway, or 'gate', connecting it to H1 (Parthenon) around the southeast. Those features are highly consistent with what is known about the Worm colossus and its arena, as explained above.
The location where Worm was originally believed to have been located is at quadrants B2 and/or C2. In the Preview and PSU Preview demos, a remnant of a desert-like area bordered with cliffs remains at B2, which was believed to be a small leftover of the colossus' arena. However, these exact same style of leftover lands also exist at G0, and in a lot of other places early on in development as seen in the Nico bonus DVD; they are unlikely to be the locations of the arena.
- Worm is the only unused colossus not to have any path data listed in the data sheets, implying the main segment of its body remained mostly stationary throughout the fight.
- Malus, a stationary colossus, also lacks path data.
- A texture of Worm's statue was found among the game's files. The reason that it was kept is because it shares the same texture file as Phalanx's statue. Other serpent type colossi that share a statue texture file are Hydrus and Dirge.
- The screenshots of Worm likely only shows its test stage before it was placed on the map, as the sand and wall textures are a possible match with those of Stage 16.
- As there's barely any information on Worm, many fans over the years have created various rumors, some more absurd than others, regarding it.
- One of the most prominent rumors is that Worm was supposed to be the largest and most powerful colossus, and that it needed a large arena so the player could avoid its attacks, which is often said to be the reason it was cut. These are false however, as no evidence of either exists. The "it needed a large arena" part is something that was said in the french magazine Chronic'art; not regarding Worm, but Phoenix instead.
- An old rumor spread in regards to Worm being fought near, alongside or after Dirge was defeated. This is due a mistranslation of Dormin's introduction line for Dirge in the preview version of the game, that read as "Along with its friend, it shakes the earth...". This line is still present in the final japanese release of the game, however, it is supposed to read as "Shake the earth with your friend...", which is a hint that the player would need the help of Agro, their friend, to win the battle.
- A popular and fairly recent rumor said that the unused soundtrack "Final Battle" was supposed to play during the battle with this Colossus. This generated yet another rumor that Worm was originally intended to be the final boss. These rumors are, however, completely unfounded and most likely false, as there's no evidence to support them.
- The artbook mentions that "the flower bulb-like section was its weakpoint", which most people assumed was the head. This created a lot of rumours which said that you needed to jump inside Worm's mouth and kill it there, even though there's no fur inside it. Such a feature would also be next to impossible to achieve in Shadow of the Colossus, as the area inside its mouth would be too small for Wander, which in turn would generate major issues with the camera.
|Characters||Wander · Mono · Agro · Dormin · Lord Emon · Guards · Shadow Creatures|
|Colossi||I · II · III · IV · V · VI · VII · VIII · IX · X · XI · XII · XIII · XIV · XV · XVI|
|Locations||The Forbidden Lands · Shrine of Worship · Colossus Arenas|
|Main Items||Power-ups (Lizards · Fruit) · Weapons (Ancient Sword · Sword of the Sun · Queen’s Sword · Sword of Dormin · Bow & Arrow · Ancient Bow · Harpoon of Thunder · Life Sword) · Collectibles (Relics)|
|Gameplay||Hard Mode · Save shrines · Time Attack · Reminiscence Mode · Watermellon · Barrel|
|Media||Roar of the Earth (OST) · Official Art and Guide Book · Nico Bonus DVD · Film|
|Releases||OPM Demo · PS2 original · PS3 remaster · PS4 remake · Credits|
|Early Builds||Preview version · PSU Preview version · E3 Demo|
|Unused Content||Unused Colossi · Datamined Colossi · Colossus Test Stages · Unused Locations · Beta Mountains · Shadow of the Colossus Development Phases|