Defeat Frieza, Goku! The Tears of the Proud Saiyan Prince! (Defeat Frieza, Son Goku! The Proud Vegeta's Tears) is the forty-second episode of Dragon Ball Z Kai. The episode first aired in Japan on January 31, 2010. Its American air date was November 4, 2010.
Vegeta's power is significantly weaker than Frieza's, resulting in the tyrant pummeling the Saiyan prince. Piccolo, Gohan, and Krillin are forced to watch as Frieza continues to attack Vegeta, scared to move or interfere. Fortunately, Goku arrives on the battlefield, whose appearance seems very familiar to Frieza (Goku resembles his father, Bardock). When Vegeta states that Goku really is a Super Saiyan, Frieza uses the Death Beam to blast the prince through the heart, only giving him a couple of seconds to live. Before Vegeta dies, he reveals to Goku that it was no asteroid that destroyed Planet Vegeta, but Frieza himself, worrying that a group of Saiyans would eventually overpower him. Goku makes a grave for Vegeta, and buries him, setting his sights on Frieza himself. Goku then prepares for his toughest battle in the series yet.
"Now it's time to share that pride..pride in myself. I am a Saiyan who was raised on Planet Earth, and in the name of every single Saiyan that you've made suffer!...For them, and all the people of Planet Namek, too!...I will defeat you!"
— Goku right before his battle against Frieza begins
Goku standing atop Frieza's spaceship
Goku after kicking Frieza
Frieza remembers the last Saiyan who opposed him in the last moment of planet Vegeta