Who's famous defensive chess players?

His full name is Anatoly Karpov. I would also look at Anish Giri.

Also I agree. I used to confuse Karpov and Kasparov. They have very similar names.

en.wikipedia.org/wiki/Anatoly_Karpov
en.wikipedia.org/wiki/Garry_Kasparov

They were opponents in four world championship matches (the K&K matches), 1985, 1986, 1987, 1990.

@TheLostRaiderDude @leander78

Thank you for the explanation.
I'll look for Karpov.
However, I don't like Kasparov's style that's based on aggressive possession.

Kramnik as re-inventor of the Berlin.