Last time in Dragon Ball Daizenshi:Mysterious men called Menzo is sending his four sons: Goku Black, Zathra Saiyan God Of Destruction, Katro and Zorgo to brainwashing and recruting strongest warriors from universes. Zathra is sended on Earth but how this will be ended?!
First from Sons: Zathra, Saiyan God Of Destruction
Earth
Goku and Vegeta is still trained and Beerus growled to himself- why this guys is always training then i just wanna do rest? and Whis repiled- this is nature of saiyans, Lord Beerus and Beerus repiled- god im know. But everything is interrupted by portal who someone is coming and it's Zathra and Goku asks- who are you?, Zathra smiled and says- good morning, Universe 7, im Zathra, Saiyan God of Destruction and Beerus is shocked, he is actually recognized him and Whis asks- what's wrong, Lord Beerus? and Zathra says- well Beerus, it's been a while, and he tried to shooted ki blast on Beerus but Goku is reflected this and says- if you wanna fight?!, okay, let's do this and Vegeta nooded and both of them is transformed into Super Saiyan Blue and launched on him, Beerus screamed- you idiots!. Zathra is blocked their blows and punched Vegeta in face and Goku in stomach, both of them is send flying and Vegeta says- stupid fucker and he launched on him again, Zathra is blocking every his blow and then their punches is crossed out and Zathra says- do you know everything about saiyans god's of destruction?! and Vegeta says- so what?! and Zathra kicked him into face and knocked him on earth, Goku screamed- Kaioken times 20 and launched on Zathra, Zathra is one shooted Goku and Goku is landed on Earth- christ, he is even stronger then Beerus, if i will turned into Ultra Instinct, and Vegeta in Super Saiyan Blue Evolution is attacked Zathra, Zathra is grabbed his throat and says- hah and see?, your knowledge about us is nothing and he punched him into stomach and shoots ki blast and knocked him on earth.
Dammit, how to beat him?!- Goku says and he is get enlighted- yeah, fusion dance and Goku is flyed to Vegeta and says- Vegeta, we need to fusion and Vegeta says-, maybe you should be said, Ultra Instinct and Goku says- im not still capable to activate this state and Vegeta scoofed- fine, go ahead and Goku flyed to Zathra and do Solar Flare, Goku jumped out and penforms fusion dance. You fools!- Zathra yelled and sees Gogeta and Gogeta says- let's dance and Gogeta transforms into Super Saiyan Blue and launched on Zathra, Zathra is tried to punched Gogeta but he is dodged and kicked him into face and send him flying, he is teleported behind him and kicked him in back, Zathra is shocked and he tried to bring back his mind but Gogeta is kicked him into head, he is landed on earth and teleported, Gogeta is tried to find him but then he hears- Hakai! and Gogeta is dodged Hakai ball and punched him into face, Zathra is sended on rocks and Gogeta is transformed into Super Saiyan Blue Evolution with Kaioken times 20 and he is screamed- Final Kamehameha times 20! and he tried to shooted it but Zathra says- wait, and Gogeta returns to his base form and says- what are you combing?! and Zathra opens up portal and says- we will ended this battle in future and he returns to Menzo with this portal and Gogeta smiled- loser and Goku and Vegeta is back to his normal forms, Beerus is happy that Goku and Vegeta is not dead.
Narrator: Zathra is ended this battle but this battle will be continue like he is teased?!, what's will be happening next?!, let's find out in Dragon Ball Daizenshi: Kaioshin vs Saiyan!, Zamasu vs Broly!