The scar

Here is how Vegeta gets that scar on his chest. He is fighting Coge (with Coge barly hurt) and Coge's hoof slashes his chest open, don't worry it heals. You can see Goku in the back running to Vegeta's aid. Goku is the only one Coge truly fears.





Art and Coge: (C) to Me
Goku and Vegeta: (C) to Akira Toriyama