In the Mahabharata, Kunti was unaware of Karna’s real identity as her son, as was Karna about Kunti being his mother. It was Sri Krishna, who informed both of them about the other’s existence. When he failed to persuade Karna not to kill the Pandavas during the Kurukshetra war, he asked Kunti to meet Karna to convince him not to kill his half-brothers.