Ben 10 Fan Fiction Wiki
Ben 10 Fan Fiction Wiki


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Build-A-Guy is the Hero Watch's DNA sample of a Segmentasapien from the planet Polyominus.


Build-A-Guy's appearance looks similar to that of a gorilla made out of building blocks. He has three main colors, which are variations of blue, with black lines all over his body. He doesn't have a primary color and has white eyes with a black face.

Build-A-Guy wears the Hero Watch symbol on his head.

Powers and Abilities

Build-A-Guy's shapeshifting powers allow him to transform into multiple things, such as a wall, catapult, cage, etc. If Build-A-Guy's body is damaged/broken he can easily reform the broken pieces immediately. He can form more blocks on his body, either to grow in size, create constructs of blocks, change himself into a larger construct, or even use them as projectiles.

Build-A-Guy can willingly detach parts of his body to get out of certain situations and turn his hands into guns, dubbed the Block-Lobber, and fire explosive blocks from them. The blocks are also painful to step on, as seen when Humungousaur used them to pain Khyber as Tyrannopede into releasing him from his mouth.

Build-A-Guy is very dense and durable and has enhanced strength, as he was able to punch into a Dimension 12 robot and shut it down.

Build-A-Guy is shown to be immune to extremely high amounts of radiation, as shown when Bloxx protected Rook from dying in the Earth's atmosphere.


Despite his shape-changing abilities, Build-A-Guy can be broken when hit with enough force, but can easily rebuild himself right after.

Beings that can become intangible, such as Ectonurites, can easily phase through Build-A-Guy if he traps them in his dome form.

While Build-A-Guy is highly durable to an extent, he still feels pain, as seen when Ben was being beaten down by Negative Ultimate Humungousaur. Similarly, plummeting through Earth's atmosphere caused him great discomfort, enough to make his butt feel like it was "on fire".

Build-A-Guy is vulnerable to acidic substances, whether it be liquid or gaseous.

Like any other organic being, Build-A-Guy is vulnerable to being erased from existence by a Chronosapien Time Bomb.

There is probably a limit to how big Build-A-Guy can become, but it has not been established.