Ive never even seen a Marlix/Momentus in the Wild. I only get enraged zombies. And I've only seen about 10 enraged mobs in my time.. And I live in the wild on Smp6.. Wut.
Palm's story: I had defeated 3 momentuses before, never got more loot than some diamonds. Today I just defeated 3 momentuses in a row, with RainbowChin (we didn't get a pic of the third one) . The loot so far: 2 zombie heads and 17 diamonds, of 3 momentuses! -_- I gave up on fighting the 4th one and the marlix lol. And whilst fighting I found this: This thief skeleton took my head and RainbowChin's chest plate and sword
Good luck and we told you so When we left there should've been 3 more momentuses for you to fight I think.
Me and Panda just battled one earlier today in a griefed land! Those things tower above the mini zombies, and they hold so much health! It takes more than one player to defeat them at least! I've heard there are also giant skeletons and creepers too.