As with the likes of other special villagers such as Label and Saharah, Redd will also appear on your island at random. He randomly appears on your island and there is no specific time frame for when he visits. However, you can expect to find him wandering on your island once every 2 weeks or so.

Why isn't Crazy Redd showing up on my island?

It is likely that you are simply getting unlucky. Make sure you visit your island every single weekday to ensure you don't miss him when he finally shows up.

How often does crazy Redd visit wild world?

In Animal Crossing: Wild World, Crazy Redd's appears once a week outside town hall and requires a password to enter. If the player has not yet visited the shop, a villager will tell them the password on the day the shop is in town. Once the player enters Crazy Redd's, they must purchase a membership for 3,000 Bells.