"Dokan"

TADASUKE: But let me say it plain and simply, one person is angry and the other one is just oh, what is "Dokan?" Hey! Tell me! What is "Dokan"? I won't go home until I hear the answer!

HARADA: Dokan! It's "Dokan!" Do you understand?

TADASUKE: So what is "Dokan"

HARADA: "Dokan!" Nothing more, nothing less! "Dokan" is "Dokan!"

TADASUKE: So what is "Dokan"? 

HARADA: How many times do I have to say it? "Dokan" is "Dokan"! Remember that!

TADASUKE: Ha! Ha! Ha! "Dokan", don't say it then if you don't have a punchline! Blowing up by yourself!

"Dokan" is an onomatopoeia word that is/was used by Daisuke Harada. It doesn't have a direct equivalent in English but the word itself indicates the sound of an explosion i.e. a volcano, a firework. Harada (as he is from Osaka) uses the Kansai pronunciation, whereas the word can be pronounced differently elsewhere in Japan (for example in Nagasaki it is "Donpo", in Kumamoto "Donkacho"), so the best way to put it would be "kaboom", "boom" etc. Additionally Harada will also sometimes add on "Hana..dokan", which can probably be best put as shower of sparks.  

"Warring States Period"

Phrase used by YO-HEY (and I think also Daisuke Harada) to describe the chaotic war going on in the Noah Juniors for most of 2020 and 2021. This refers to the period of ancient Chinese warfare characterized by seven warring states constantly attacking each other, switching sides and then betraying each other etc, and plunging the country (as it was then before China was unified) into chaos. 

"100 Wrestler"

Phrase first used by The Sugiura Army (probably Takashi Sugiura), to describe Kenoh. While there is no direct equivalent of the saying in English, it can be likened to mean something uniform, alike and featureless and no different from the rest i.e. peas in a pod, a packet of office biro, a pile of plastic boxes. 

HAYATA used the phrase, "Next...100 wrestlers", against Haoh and Nioh when they challenged STINGER for the GHC Junior Heavyweight titles.