Missing Dot Badges from Nintendo Badge Arcade:

Generations:

1. Gen VII

Pokémon Gen VI:

1. Done

Pokémon Gen II:

1. Done

Pokémon Gen III:

1. Done

Pokémon Gen IV:

1. Done

Pokémon Gen V:

1. Fighting

Pokémon Gen VII:

1. Marshadow
2. Pikachu in a cap forms

Edit: Added August 18th 2016 additions.

Edit 2: Added September 15th 2016 additions.

Edit 3: Added October 27th 2016 additions.

Edit 4: Added January 12th 2017 additions.

Edit 5: Added February 23rd 2017 additions.

Edit 6: Added March 9th 2017 additions.

Edit 7: Added March 23rd 2017 additions.

Edit 8: Added April 6th 2017 additions.

Edit 9: Added April 20th 2017 additions.

Edit 10: Added May 4th 2017 additions.

Edit 11: Added May 11th 2017 additions.

Edit 12: Added May 25th 2017 additions.