A Gryphon reaches maturity by age 7. Gryphons don't usually live longer than 80 years.

Your Strength score increases by 2 and your Constitution score increases by 1.

Most Gryphons are Good. Some Gryphons like the freedom and tend toward chaotic, others are honorful creatures that love order and tend toward lawful.

Gryphons are about 8 feet long. Your height from your feet to your shoulders is about 6 feet. You weigh between 380 and 500 pounds. Your size is Large

Your base walking speed is 25 feet.

You have a flying speed of 50 feet. To use this speed, you can't be wearing heavy armor. You have a wingspan of 25 feet.

You have 60 ft of darkvision

Any armor you wear must be made specifically for your body, with certain armor for mounts being an exception. Also, you can not use normal weapons because of your body shape. Work with your DM if a blacksmith can make you certain weapons and armor that you can use. Examples of this could be blades on the wings or reinforcements for your talons. This is associated with a significant extra charge in relation to normal items. You are able to perform somatic components for spells. You still count as a humanoid for the purpose of spells and class features. In general, your type is monstrosity.

A griffon speaks Auran. However, he cannot speak Common, but understands Common.

You are proficient with your talons, which deal 1d6 slashing damage. The Damage increases to 2d6 at level 5, 3d6 at level 11, and 4d6 at level 17. It Requires an entire action to use this attack and it does not function with the Extra attack feature. Your talons count as weapons attacks rather than unarmed strikes.

You are proficient with thrown weapons and improvised thrown weapons. When you fly above a target, you can use your action to make a special attack by dropping an object that is carried by you. If the object is a throwing weapon, it deals it according damage and long range doesn't impose disadvantage on the attack. Improvised throwing weapons like rocks, that weight at least 10 pounds deal 1d6 points of bludgeoning damage for every 10 feet it was falling. The long range of these weapons is 60 feet. For every 100 pounds that the item weighs, the damage is increased by 1d6 per 10 feet. Also, when you throw a flask or explosives like an alchemist´s fire or holy oil, the range is increased by 40 feet.

For those you know and love well, you grant the experience to fly with you through the air. Regarding riding, you count as a large creature. If an effect causes your rider to fall off, you can use your reaction to prevent this. When you take the attack action, your rider can use its reaction to make a melee attack at the same target. You are considered an independent mount. Regarding the mounted combat rules, see chapter 9: combat, Mounted combat in the PHB.