Conkeldurr is a bipedal sepia-colored Pokémon resembling an ogre. Its nose is large and red, with its face also having a prominent brow, a wide mouth, a gray tuft on its chin, dark rings around its eyes and a bulbous feature sticking up from the back of its head. Thick violet bands and tendons adorn its shoulders, chest, back and thighs. It is known to carry concrete pillars in its massive arms, which it uses to attack strongly without using physical strength or to support its massive upper body. Conkeldurr can create concrete, a technique it was believed to have taught humans 2000 years ago. It is often seen around construction sites helping construction workers.
Conkeldurr's evolutionary line shares many similarities with Machamp's evolutionary line. Both of them are Fighting-type Pokémon whose Attack is their highest stat, have below average Speed, have the same gender ratio, have three evolutionary stages, reach their respective final-evolutionary form through trading and have the same base stat total.
In Pokémon Conquest, Conkeldurr and its pre-evolved form, Gurdurr, are the only Pokémon that share a max link of 100% with five different Warriors, which is the highest amount found in the game.
At first glance, Conkeldurr's brutal humanoid appearance suggests inspiration from ogres of folklore. Timburr's Pokédex entry supports that it and its evolved forms are based on construction workers. Due to its clown nose and buff body, it may have also been based on a musclemancarny from a carnival sideshow. It also seems to be based on an elderly person since it has a gray tuft under its chin and uses its pillars as walking canes.
Conkeldurr may be a combination of concrete and elder. It may also involve conk, having meaning as both an especially large nose and to hit someone on the head.
Roubushin may be a combination of 老 rō (old) and 武神 bushin (warlord) or 普請 fushin (construction work/public work).