King Mrgl-Mrgl for the former. As for trials, aside from Garrosh and Lucinda, I can't recall anyone who has been put on trial (and both of those were shams); that doesn't mean everyone else's actions are condoned. Additionally, Sir Finley Mrrgglton has shown that murlocs are just as capable as other races in terms of intellect and adventuring, and Murgulis has shown murlocs are capable of completing the rites required to become a demon hunter.