If you haven't got the dlc yet but it spawns on your map you can use the admin code 'givetome' in order to bypass the lock. 'Forcetame' will not work.

It’s a mini game -

1st one you are basically playing Simon says with its actions ( left roll, back flip, 180 turn, right roll ).

2 game is like the oasisaur (you fly around trying to avoid taking damage while dealing damage) easy way to do this is to kite all the argies and pteras into one group while maintaining distance. Use toothless’s charge attack for the fire balls hitting them all at once and you should complete that game quickly

3 (travel in a short time) fly high up into the air and nose dive. You’ll complete this easily

4 make sure either kibble or mutton is on the last box of your hot bar to feed it its taming food. Then rinse and repeat until it is tamed

FYI they also spawn on extinction

Note for everyone on the Dododex, these do not only spawn on Ragnarok. They spawn on Scorched Earth too.

they also spawn on extinction from what i’ve seen

I found that if you have a drakeling on your shoulder with parachute mode enabled, the "travel" part of the taming mini-game is almost impossible to complete. Works fine with Lumina though.

Seen it in the snow dome of extinction if this information helps

These also spawn on astreos in the desert region at night!

They spawn on lost colony aswell

Not sure if anyone else has posted this, but when taming, you are able to control the movement and direction of thr dragon while riding it. Use this opportunity to fly as far and as high up as you can. The closer to the ceiling the better in order to minimize your chances of colliding with player built structures, and to maximize your chance of a good diving distance during the third phase of the taming game. Ive found this helps a lot on Ragnarok around the Red Ob region