How can one tell Nappa has become a Super Saiyan?

We can identify Super Saiyans by the change in the colour of their hair.
But with Nappa being bald, how can we identify he has become a Super Saiyan? Is it only by the increase in power?

Hari Nandha
  • 1.2k
  • 4
  • 12
  • 16