Saw the thread, and instantly thought of this guy:
To me (like someone else mentioned), a Golem is almost more iconic to the series than the slimes are.
Also these guys:
Even though they could ruin your day when in a dungeon.
And finally these guys:
Evil Armor just looks badass. There are a ton more I could pull from, DQ has an impressive list of great (and goofy) looking monsters.
These are all DQ7 (PSX) models of mobs which is my personal fave of the series, so obviously they look the "best"
![Stick out tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)