Homebrew Lucario Species Details

Hard and Heavy

A certain percentage of a Lucario's body contains metal, some of which can be seen forming defensive horn-like protrusions on their chests and upper paws. These can be used as weapons when they fight. The metal also makes them a bit heavier than their size might suggest. This also makes them unable to swim in deep water.

 

Perceptive and Focused

Lucarios have an innate ability to sense an energy that all living things contain called aura. The lucario itself has a much higher concentration of aura than most other beings as well. They can also utilize this energy in their own body for many different purposes. It comes naturally to them to be able to sense other living things' aura given they take a moment to focus on it. If they hone this ability and learn to utilize their own aura, they can use it as a source of energy to power themselves up or create projectile spells or solid weapons out of their aura.

Lucarios prefer rocky and arid climates and have an innate desire for combat. They will play fight with each other at younger ages and won't back down from any challenges. They can also use their aura perception to gauge an opponent's strength before fighting them.

Lucarios will determine their relationship with another being based almost entirely on the first impression. They will respect another as an authority figure should they be exposed to their assertive side and recognize their capabilities as superior to their own. They will also see themselves as a leader or authority to anyone who has a meek personality or is shown to be weaker than themselves. 

 

The Power of Aura

Aura plays such an important role in the culture for Lucarios. They have learned to use it to communicate with each other without the need for speech and can also learn to do the same with other individuals of different races given they are around them long enough to fully understand that individual's aura. They incorporate aura into their fighting style as well and can use it to quickly understand how another person is feeling. 

Lucario Traits

Lucario have an innate connection to a life-force called aura which can be used for many kinds of abilities.

Size

Lucario stand between 3 and 5 feet tall and average about 135 pounds. Your size is Medium or Small.

Aura Enhanced

Lucarios can unleash their aura during a fight to give them the edge in battle. This ability is what makes them such proficient fighters. Once per day, as an action, you can enhance your physical abilities with your aura for 30 seconds (5 rounds), granting an additional bonus equal to your proficiency bonus to Strength, Dexterity, Constitution, and Movement Speed for the duration.

Darkvision

Lucario are nocturnal and have a heightened sensitivity to light. They can also use their aura to sense their surroundings in the dark. You can see in darkness (shades of blue or gray) up to 60 ft.

Lucario Combat Culture

Lucario fight constantly starting from a young age, using their own paws and spikes as weapons.  You gain a +1 to your unarmed attack rolls, and an additional +1 for every 4th level.

Steel Spikes

Your body contains heavy metal that protrudes from your chest and paws. You can add 1D4 damage to your unarmed attacks and an additional 1D4 per 4th level.

Common Understanding

A Lucario can use their aura to send messages that bypass the need for spoken language. Targets of these messages understand them in a language they know. The Lucario cannot receive the same messages back however, unless they have a firm grasp and understanding of the aura of the person they are conversing with by having known them for longer than 2 days. You do understand Common as a spoken language but you cannot speak it.