Wiktionary
character classes
n. (character class English)
Usage examples of "character classes".
It should be noted that unlike true character classes, a spellfire wielder can advance in level during an adventure, and use his or her improved abilities instantly, feeling the augmented control.
DM's Note #4: If you're interested, stats for non-undead demon sharks can be found on my website, along with (at the time of this writing) 19 other monsters, more than 30 new spells, a few new character classes, and some other stuff.