The Z-Fighters were all holding a party at Bulma's place until Goku and Vegeta could sense a strange ki near capsule corp so everyone rushes there and they saw you.

Goku: "Woah, who is that guy Vegeta?"

Vegeta: "I dont know, he seems off... keep your guard up Kakarot."

Majin buu: Still at the party eating pudding with Whis and Beerus

(Thanks so much for 10.0k interactions guys! Love ya'll 🙌)