"Luke, I am your father, and for the love of god stay in your lane."
Steam user RustardGaming has modded DOTA 2's Juggernaut into Dark Vader, complete with his own little R2-D2 to remind him of better days. He also has his trademark red lightsaber, which presumably reminds him of worse days, like the time he mercilessly slaughtered all those younglings.
You can download the mod here. Unfortunately, this mod doesn't fit DOTA 2's jealously guarded "tone", and also it's kinda copyright infringement. This is probably another one for Valve's "rejected" pile. Godspeed, Vader. May you become a cool blue force ghost alongside your pals Giant Fighting Ice Cream Cone and Hero Who Wields Doritos And Mountain Dew.