Riolu is a popular and beloved Pokémon, known for its loyal nature and strong bond with its trainer. If you want to evolve Riolu into the powerful Lucario, you must understand how friendship-based evolutions work. Many players find this evolution a bit tricky, especially if they are new to the Pokémon series. This guide will help you learn everything you need to know about how to evolve Riolu in a smooth and easy way. We will go through steps, tips, and helpful methods you can use in most Pokémon games where Riolu appears.

Riolu is a small Fighting-type Pokémon introduced in Generation 4. It evolves into Lucario, a dual Fighting and Steel-type Pokémon. Lucario is a fan favorite due to its strong stats, signature moves, and ability to Mega Evolve in some games.
The key requirement to evolve Riolu is building a high friendship level. Once Riolu reaches a strong bond with you, it will evolve — but only when it levels up during the daytime. Without these two conditions, Riolu will remain in its first form.
What Is Friendship in Pokémon Games?
Friendship, sometimes called happiness, is an invisible stat that measures how close your Pokémon is to you. Many actions increase it, but some actions decrease it. To evolve Riolu, you need a friendship level that is high enough to trigger evolution when it gains a level in the day.
Your friendship level starts low when you first get Riolu. You must work to raise it, and this process takes time. If you rush, you may miss some important steps. Being patient and attentive will make the journey easier.
How to Increase Riolu’s Friendship Quickly
There are several ways to increase friendship in most Pokémon games. You should try a combination of these methods to reach the required level faster.
Some of the best methods include:
- Keep Riolu in your party while traveling
- Level it up through battles
- Use items that boost friendship like Soothe Bell
- Feed it vitamins such as Protein or Iron
- Give it berries that increase friendship like Sitrus or certain special berries
- Visit massage shops available in some game regions
- Heal Riolu at Pokémon Centers when needed
- Walk or run long distances with Riolu in your party
Each of these actions raises friendship bit by bit. If you want to move faster, always carry Riolu with you in your main party.
Things That Lower Friendship
To avoid slowing down evolution, make sure you do not perform actions that reduce its bond. Some common mistakes that players make include:
- Letting Riolu faint in battle
- Feeding it bitter items or herbs
- Leaving it in the Pokémon storage box for too long
- Using items that Riolu dislikes
These actions can reset your progress unintentionally. Treat your Riolu well and keep it safe in battles to maintain progress toward evolution.
Leveling Up During the Day
Even if you reach maximum friendship, Riolu will not evolve unless it gains a level during the daytime. The game usually counts daytime as morning and afternoon hours. If you are unsure about the time, simply battle or use an Exp. Candy when the game shows daylight.
This rule can sometimes confuse players, especially in areas with caves or dark environments. If you cannot clearly see the time, check your game settings or move outside into the sunlit overworld before trying to evolve Riolu.




