Basic Trope: While fighting, a fighter yells what he does as he does it.
Straight: Chuck yells out "Flaming Fist" as he punches a dude.
Exaggerated: He calls out his attacks for every action, done in the most over-the-top manner and even takes calling attacks as Serious Business, spending his free time inventing new ways to say things.
Chuck only says the attack name once or twice, explaining the name to the opponent. Might be part of a Badass Boast.
Chuck: Wait until you get a taste of my Flaming Fist!
The attack name is subtle enough to be mistaken for normal fighting banter.
Chuck mutters it quietly due to force of habit.
He has supernatural or technological attacks which are voice-activated, thus requiring him to yell out their names.
Chuck wants the name of the attack to catch on and become renowned and feared for it.
Chuck incessantly yelling his attacks screws him because he's telegraphing his attacks.
Chuck has OCD or some other mental illness and has trouble doing anything without speaking it aloud. The few times he tries doing something without speaking results in him botching the move or becoming noticeably disturbed. They later find out it's due to his abusive mentor's training methods and the trauma he experiences during his battles.