Aldrin can communicate with beasts as limited by their Intelligence and can use an action to expend a spell slot and sense whether certain creature types are present within 1 mile, or 6 miles in favored terrain, though the feature does not reveal their exact location or number.

Aldrin can use a bonus action to take the Hide action. He can also remain unseen while traveling alone at a normal pace.

Aldrin has two favored enemy types, humanoids, and monstrosities. He has advantage on Wisdom (Survival) checks to track them and Intelligence checks to recall information about them. He also speaks one language associated with each favored enemy type, Goblin and Undercommon.

Aldrin is an experienced traveler in forests, mountains, and grasslands. In favored terrain, difficult terrain does not slow his group's travel, the group cannot become lost except by magical means, and he remains alert to danger while engaged in other activities. He can move stealthily at a normal pace when traveling alone, finds twice as much food, and while tracking other creatures learns their number, size, travel direction, and approximate time of passage.

Aldrin can cast ranger spells using Wisdom as his spellcasting ability. He knows 11 ranger spells and regains expended spell slots after a long rest.

Aldrin chooses the Archery fighting style, gaining a +2 bonus to attack rolls made with ranged weapons.

Aldrin can attack twice, instead of once, whenever he takes the Attack action on his turn.

Moving through nonmagical difficult terrain costs Aldrin no extra movement. He can pass through nonmagical plants without being slowed or damaged, and he has advantage on saving throws against magically created or manipulated plants.

Aldrin can spend 1 minute creating camouflage for himself. While camouflaged, he gains a +10 bonus to Dexterity (Stealth) checks while remaining motionless and gains the benefits of being hidden until he moves or takes an action or reaction.

Aldrin can see invisible creatures within 30 feet, provided they are not successfully hidden from him.

Once on each of his turns, Aldrin can add his Wisdom modifier to the attack roll or damage roll of an attack against a favored enemy. He can choose to apply the bonus after seeing the roll but before its effects are determined.

At ranger levels 4, 8, 12, 16, and 19, Aldrin gains an Ability Score Improvement. His final ability scores reflect the specified character build and species bonuses.

Aldrin chooses one additional favored enemy type and one associated language.

As a Hunter, Aldrin chooses Colossus Slayer. Once per turn, when he hits a creature with a weapon attack, the attack deals an extra 1d8 damage if the creature is below its hit point maximum.

As a Hunter, Aldrin chooses Multiattack Defense. When a creature hits him with an attack, he gains a +4 bonus to AC against all subsequent attacks made by that creature for the rest of the turn.

As a Hunter, Aldrin chooses Superior Hunter's Defense, gaining Evasion. When subjected to an effect allowing a Dexterity saving throw for half damage, he takes no damage on a success and half damage on a failure.

Aldrin has an excellent memory for maps, terrain, and landmarks. He can find food and fresh water for himself and up to five other people each day, provided the land offers natural resources. He is also familiar with the customs, settlements, and wilderness of the regions he has traveled.