From Diablo Wiki
Modifiers found on bosses and champions (and often shared to their packs) that make them nastier than the average monster. Lots of these modifiers are familiar from Diablo II, but they're all tweaked in some ways, and many of them are new to Diablo III.
See the Boss Modifiers page for the master list. See the individual Modifier pages for more details and screenshots.
Pages in category "Boss Modifiers"
The following 36 pages are in this category, out of 36 total.
Media in category "Boss Modifiers"
The following 66 files are in this category, out of 66 total.