Tekken 4 was an interesting game in every shape and form. Voice acting included. Like, Jin spoke to Hwoarang in English and in Japanese with basically everyone else.
I honestly find the "characters speak their native language" pretty jarring... like Asuka yelling at Lili in Japanese but Lili just reacting like she understands lol. Especially when characters like Xiaoyu and Alisa speak Japanese despite not being Japanese at all
Xiaoyu is a high school student at Mishima High, which I would assume is in Japan, so I guess it makes sense for her to speak Japanese. Alisa was developed in a Japanese lab, as well as being programmed to protect Jin, so that's self explanatory. Characters magically understanding each other is pretty dumb though.