I overuse Goblinoids and Fiends. Every type of goblin get's used in my campaign but most of the time the goblins and bugbear's are being manipulated/led by the more organized and cunning hobgoblin's. Hobgoblin's are just really appealing to me because they our a LE martial focused society. Similar to orcs they believe the strong have the right of conquest. But where orcs want to just raid and kill what's around them, Hobgoblins want to CONTROL and RULE. and if they're armies can't conquer their neighbor's welp it'd be to bad if those pesky bugbear's and goblin's kept causing problem's on our neighbor's borders.
Demon's get overused. The amount of destruction they can weave through an area is absolutely amazing. Not very many mortal armies can stand up to demonic incursion so it takes a truly skilled party to heal and stop that type of demonic incursion. Even if demon's are not the sole purpose of the campaign, the party can bet they will run across one and they'll eventually have to shut down a portal to the abyss. Unknown Dyson described pretty perfectly why I like to use demon's to much. Something appealing about something that can not be reasoned with.
Demon's get overused. The amount of destruction they can weave through an area is absolutely amazing. Not very many mortal armies can stand up to demonic incursion so it takes a truly skilled party to heal and stop that type of demonic incursion. Even if demon's are not the sole purpose of the campaign, the party can bet they will run across one and they'll eventually have to shut down a portal to the abyss. Unknown Dyson described pretty perfectly why I like to use demon's to much. Something appealing about something that can not be reasoned with.