Rockslugs have a 100% charm drop rate of either a gold, green, crimson, or blue charm to drop and are generally broken
What I did: Killed rockslugs on a slayer task
What I expected to happen: No charms to drop judging on 2009 drop tables I've seen
What actually happened: Gold, Green, Crimson, and Blue charms dropping.
IDs of related NPCs/items: 1622, 1623
2009-era source (if relevant): https://runescape.wiki/w/Rock_slug?oldid=894270#Drops
They also are extremely hard to hit given their defensive stats, you can use salt on them from 1-9 hp instead of 1-4 hp, and their animations are bugged. They also dropped the wrong gloves (should be light) and they hit the RDT way too often.
Edited by Ateryk