Monstrous Physique — The Iron Giant

Last week I saw Ready Player One and one of the notable inclusions to the movie was an enormous robot from a number of people’s childhoods. While this could be a number of different robots, I’m referring to the Iron Giant. The 1999 movie of the same name is set in the U.S. in the 1950’s and is very much a throwback to classic sci-fi. More than that, however, this movie is awesome! It is both a wonderful animated movie, but just a great movie on its own right. I highly recommend it! Anyway, after seeing the Iron Giant show up in Ready Player One, I knew I had to jump at the chance to stat it up for Starfinder. So, let’s take a look!

The Iron Giant               CR 15
XP 51,200
N Gargantuan construct (technological)
Init +5; Senses darkvision 60 ft., low-light vision; Perception +31
hp 275
EAC 29; KAC 31
Fort +15, Ref +15, Will +11
Defensive Abilities indestructible, self-repair; Immunities construct immunities; DR 10/—
Speed 40 ft., fly 40 ft. (Ex. Average)
Melee slam +29 (8d6+24)
Ranged arm cannon +29 (5d8+15 E)
Space 20 ft.; Reach 20 ft.
Offensive Abilities energy cannon
Str +9, Dex +5, Con —, Int +1, Wis +0, Cha +2
Skills Intimidate +26, Perception +31, Stealth +26
Languages Common
Environment any
Organization solitary, pair, or squad (3–10)
Arm Cannon (Ex) The Iron Giant has a large cannon built into its arm with a range increment of 120 feet. Arm cannon attacks are considered magical for the purpose of damage reduction.
Energy Cannon (Ex) Once per day, the Iron Giant can use a massive cannon built into its chest to attack its foes. It must charge the cannon as a full action. On its next turn, it can fire the cannon at a point within 1 mile. The cannon fires an enormous orb of energy at the point which detonates in a 500-foot radius area. All creatures and objects within the area take 100d6 points of energy damage. The energy is of an unknown type and is not subject to resistances or immunities. Creatures within a number of feet equal to their fastest speed can avoid the damage from the detonating orb with a successful DC 21 Reflex save.
Indestructible (Ex) The Iron Giant is made from an unknown alloy. This alloy grants the iron giant DR 10/— and cannot be destroyed by any known means.
Self-Repair (Ex) When reduced to 0 hit points, the Iron Giant dismantles into its various components. These components eventually attempt to reform themselves after 3d4 weeks. This requires each that each component maneuver itself to rejoin the rest and is a process that typically takes 2d6 months if all of the components are on the same planet. This can take significantly longer if the components are further apart.

The Iron Giant is a construct from an unknown world. The Iron Giant was originally designed as a weapon. Some time ago, however, the Iron Giant crash landed on a distant planet and reset its original programming. Now, it interacts with the creatures of planets with a childlike wonder. Those that are able to win over the Iron Giant earn a friend and a powerful ally. Those that draw its ire soon find themselves attacked or destroyed by the Giant’s massive arsenal. The Giant’s weapons, along with the rest of the construct, are of an unknown design and have a seemingly limitless destructive potential. Some species have attempted to destroy the Iron Giant, but the worst damage inflicted upon the Giant merely causes it to fall apart, only to reform some time later. For now, those that are aware of the Iron Giant do their best to stay on its good side.

Monstrous Origins

The Iron Giant is a giant robot from the movie of the same name. In the movie, it crashes on earth and becomes a sort of blank slate. With the help of the young protagonist, Hogarth, the Giant starts to learn about right and wrong, life and death, and being a hero. In the movie, the Iron Giant is able to use its massive weapons to cause lots of destruction, eventually fighting the U.S. Army. The movie shows a number of different weapons built into the Giant. Rather than try to stat up every different weapon, I used the arm cannon as a catch all for its weapons. Of course, the most impressive weapon the Giant uses is its chest cannon. When we see it in the movie, it is essentially an enormous bomb, bordering on an atom bomb in terms of destructive power. To keep the destructive power intact, I made sure it did a LOT of damage. Good luck to anyone that is in its explosion range. One key component of the Iron Giant is that it is never truly destroyed, which I made sure to keep here as well. Finally, I also had to make sure that the Iron Giant could fly because…

That’s it for this week! If you end up introducing the Iron Giant into your game or you have any request for a future Monstrous Physique, please drop me a line at

Luis Loza

Luis Loza is a developer at Paizo, working on the Pathfinder World Guide line and formerly on Campaign Setting and Player Companion lines. He's done freelance for Paizo Inc, Legendary Games, Rogue Genius Games, and more third-party publishers. His hobbies include gaming both tabletop and video, making jokes, obsessing over time travel, taking naps with Nova the cat, and walks with heather the wife. He is eternally plagued with a hunger for tacos.