There's actually two of them doing it at the same time. It seems to be the dark thorn horse gear.
Install the Black Desert Launcher if the game doesn't start.
The launcher will appear if it's installed.
If it doesn't, try to run your downloaded launcher.
1 Run BlackDesert_Installer_NAEU.exe to install the Black Desert launcher.
2 Start the game once installation is complete.
There's actually two of them doing it at the same time. It seems to be the dark thorn horse gear.