This video shows all 5-Volt appearances in WarioWare games starting from 2005 to 2018. This includes all cutscenes, stages and Super Smash Bros. appearances.

WarioWare: Twisted! (GBA - 2004)
00:00 9-Volt Story Ending

WarioWare: Touched! (DS - 2004)
00:38 9-Volt Game Over Screen

Game & Wario (Wii U - 2013)
00:48 Gamer (Gameplay + Game Over)
04:16 Character Card

Super Smash Bros. for Wii U (2015)
04:33 Gamer Stage
05:39 Trophy

WarioWare Gold (3DS - 2018)
05:59 Stage & Cutscenes
13:21 Sneaky Gamer
15:20 Character Cards
16:15 Alarm Clock

Super Smash Bros. Ultimate (Nintendo Switch - 2018)
17:11 Gamer Stage