Whenever a character speaks during a mission in Star Fox: Assault, their name appears above the message box. Curiously, when viewing the graphic with the full list of names found within the game files, Tricky is included despite him only being present during the end cutscene of the Sauria mission where there are subtitles instead.

This suggests that he originally either spoke to you during the Sauria mission in-game, or that the cutscenes were intended to have transmission boxes instead of subtitles.