Have 5 Bocks to gain I’ll Be Bock, Untappd’s badge for Bock beers. A Bock is a style of strong, malty lager that originated in Germany.
Untappd recognises six substyles of Bock, and they all count towards this badge: Single/Traditional, Doppelbock, Eisbock, Hell/Maibock/Lenteboc, Weizenbock and Weizendoppelbock.

A traditional Bock sits at around 6 or 7% and is rich and malty. Made by traditional lager techniques, Bock also means Goat in German and so goats often feature on the label.
A Doppelbock is a stronger, maltier version that ends up anywhere between 7 and 12%. An Eisbock is even stronger, it is made be slowly bringing a Doppelbock down to freezing and removing the ice as it forms on top. This reduces the water content, intensifying the flavour and strength. Eisbock’s also have their own badge, From the Cold.
As the name suggests, Weizenbocks are made from wheat instead of barley. Unusually for a wheat beer, they are brewed using dark malts and are a similar strength as a Doppelbock.
Finally a Maibock or Helles Bock is a light Helles lager that is brewed to Bock strength. As it is a combination of the two styles, any Hell/Maibock/Lenteboc you check in also counts towards the Helles badge, Hella Delicious!