Verbalizing attack/technique names

[TheZFighter]

Potentially a dumb question, but I can't recall this ever being addressed anywhere else...

You know how he characters will go "KA-ME-HA-ME-HAAAAA!", "TRI-BEAM-HAAAAA!" or "SOLAR FLARE!".

Is calling out an attack or techniques name in any way required "in-universe", or is it more for our benefit?

[VegettoEX]

Shouting attack names is an extension of a standard kiai. We have seen characters use proper-noun-attacks — namely the Kamehameha — countless times without it having to be verbally announced.

[PerhapsTheOtherOne]

^What the good mod said.

Shouting is a very well-defined aspect of real-life martial arts, used to help amplify one's movements due to the mechanics of breathing intake/exhalation.

[KBABZ]

It's kinda both. In Dragon Ball Krillin tests out performing a Kamehameha, saying "All you have to do is put your hands together and say Kamehameha!" (dub line, apologies) as he does it, and it immediately makes a little ki puff at the end. So that implies that some level of verbalization is required. I always took being able to do it without saying anything as a mark of having mastered the move, kinda like in Harry Potter with spells.

[MyVisionity]

Nah, it ain't required. It's for the audience's benefit, like you said.

[SupremeKai25]

In Fused Zamasu's case, it obviously derives from his endless ego and vainglorious personality, so it makes sense that he would name and announce his attacks prior to using them.