The European guild APES got the world first kill on both Ragnaros and Onyxia. WoW Classic was released on Thursday at 00:00 (CEST), and they managed to get kill both bosses in just five days since release. Below you can see the video from both Ragnaros and Onyxia

Ragnaros

World first Ragnaros kill

Onyxia

World first Onyxia kill

Full Ragnaros and Onyxia Kill Stream

Full stream