Dragon Ball Super - episode 21 - 28 Nov, 2015

Freeza and his army arrive on Earth, where Gohan, Piccolo, Krillin, Master Roshi, Tien, and Jaco have assembled to hold out until Goku and Vegeta return. Freeza says that he has waited a long time to have his revenge and that he wishes to face Goku. Seeing that he is not present to help, Freeza orders his army to attack the Earthlings, and they proves to be no match for the fighters - even Krillin, who had given up fighting. Disappointed with his lackluster army, Freeza orders Sorbet to send in his elite soldier Shisami (シサミ) to take out Gohan. Suddenly, Tagoma fires a beam at Shisami and Gohan, which kills the former and badly injures the latter. Sorbet is surprised by Tagoma's newfound power, which he had achieved through training with Freeza. Freeza promises Tagoma the command of his army if he takes out the Earthlings. He accepts and prepares to fight the Earthlings. Meanwhile, Goku and Vegeta are oblivious to what is happening on Earth as Whis sends them to train in a pocket dimension at Beerus's command. (Source: Wikipedia)