Drillnohorn is an Energy Beast from the Transformers: Wild King franchise, specifically a member of the Animal Tribe residing on the planet Elementros. His design and abilities are based on a powerful robotic rhinoceros. The character is defined by his relentless dedication to self-improvement, as he is always training to enhance his physical strength. This commitment makes him a formidable warrior on his homeworld.

In combat, Drillnohorn relies on raw, earth-shattering power. His primary offensive maneuver is a devastating charge attack using the large horns on his head, which is strong enough to smash even large rocks into pieces. Complementing this brute force is his incredible leg strength, which grants him the ability to leap to great heights, allowing for surprising agility in battle. As an Energy Beast, he possesses a specific elemental power known as Ground Energy, which gives him dominion over the earth. This energy is housed within a detachable "Ground Energy" breastplate.

Drillnohorn plays the role of a powerful ally who initially operates independently. In the Wild King cartoon narrative, he is first encountered when the main group of heroes seeks him out. At that time, he is being pursued and attacked by Thunderbeak, a member of the antagonistic Dinosaur Tribe. Drillnohorn struggles against Thunderbeak's aerial assault and electric-based attacks but seizes an opportunity created by the intervention of Optimus Prime and his companions. He transforms into his robot mode and unleashes a "Big Power Punch" on the ground, which creates a staircase of rising boulders. He uses this makeshift structure to launch himself into the air and deliver a decisive mid-air blow against his flying foe, demonstrating his tactical thinking in the heat of battle. Following this victory, he expresses his gratitude to Optimus Prime and the others for their rescue, leading to his recognition as a valued ally.

The character has a connection to Hydrophant, as it was noted that Hydrophant had not received word from Drillnohorn for some time before the latter's appearance. He also shares a similar internal robotic structure with other Energy Beasts, including Hydrophant, Abyssrain, and Leafback. In the context of the toy line, Drillnohorn has the ability to undergo "wildocking," a process where he combines with an Energy Master figure. In this state, he can transform into either an arm or a leg extension for the combined robot form, physically integrating his Ground Energy into a larger elemental configuration.