In its Incarnate Forme, Landorus is an orange, muscular humanoid Pokémon, which resembles a genie. It is a male-only species with no female counterpart. On its forehead are three, sharp, pink horns arranged in a slight, upwards arch. Landorus has white hair shaped like a short log on top of its head, a jagged white mustache, and two pointed orange ears on either side of its head. Its eyes are yellow with beady white irises and no visible pupils. The front of Landorus's body is covered in dark pink spots; most of them shaped like diamonds, pebbles, and raindrops. its broad chest consists of two joined, dark pink diamond-shaped pectorals, and its shoulders, elbows and navel are adorned with designs resembling raindrops. It has two spotted muscular arms, with five fingers on each hand. Its lower body consists of a trailing cloud, with a long, curling, brown, branch or root-like tail. Landorus's tail has various flat protrusions running its span, each spotted in dark pink on their edge surface.
In its Therian Forme, Landorus is an orange, lean, tiger-like quadrupedal Pokémon. The horns on its head are now thinner and arranged closer together in a downwards arch. While its hair remains the same; its mustache now takes on a more fanged maw-like appearance, curving around its head to behind its ears, which have now become smaller and rounder. Its eyes remain yellow, but with larger irises which still lack visible pupils. Its chest remains broad and unchanged, while its navel is bejeweled with a beige gem. Landorus's back and lower legs are striped with dark pink, and its biceps and triceps adorned with dark pink upside down, raindrop like designs. It has four trailing cloud covered paws, each with three sharp dark pink claws. Its tail remains largely unchanged, although it may be slightly smaller and shorter than before.
Landorus is considered the "Guardian of the Fields", due to helping crops grow. Its tail causes the soil to gain nutrition. The energy from the tail is created by combining lightning and wind. Landorus seems to live above the skies. Sometimes it stops on the Abundant Shrine in the Unova region, but only when Tornadus and Thundurus are in the same place. Landorus can also stop and calm the two Forces of Nature whenever the two crash or cause destruction, thus being referred to by the grateful people as "Great Landorus".