Thunder was only mentioned a little bit, but he was not an owsla of Efrafa but Woundwort made him do some errands when they were digging out the Watership Down Warren. 

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.