Andy Rubin’s unexpected departure from Google’s (GOOG) Android team last week shocked the mobile world. The executive founded the Android project in 2003, which was later acquired by Google in 2005. While many have agreed that Rubin was an innovator during his time leading Android, one Samsung (005930) executive suggests that he could be stubborn at times as well.

Once Rubin took a position, “you weren’t going to get him to deviate from that position,” Samsung chief product officer Kevin Packingham said, according to Business Insider. The executive praised new Android boss Sundar Pichai as “a super-nice person” who is “very collaborative,” and he believes Samsung’s relationship with Google will continue to improve under his leadership.

“The Google relationship is super-important,” Packingham said.