I think to be iconic, your appearance has to have remained relatively unchanged over time, so it's not Link.
Pokemon is the biggest media franchise in the world. Even if the mainline games are kinda crappy these days, there are still plenty of side games, mobile games, TV shows, movies and collaborations coming out all the time and Pikachu is in almost every single one of them.
Still
the number one reason for the success of the Internet.
https://www.twitch.tv/thedandyjackdandy