Board Thread:General Grimm Discussion/@comment-188.120.150.104-20150110224327/@comment-81.132.75.218-20150110230105

It is shown (although not very explicitly) that Grimm have heightened reflexes, control/co-ordination, endurance/stamina, resistance to Wesen abilities, etc. I am not sure if they have increased strength usually ("zombie" Nick seems to though). Basically, they are very good fighters, in addition to seeing half-woges.

The tongue thing I presume was a full-woge of that body part, without a full-woge of the rest of their body. To have physical form it has to been seen, I would have thought. Otherwise, the only reason I can think of to full-woge is to inform or scare people, or as a complete loss-of-control.