Just came from watching the finale of Fate Apocrypha.
Let's see how the protagonists of the respective Fate series fare.
- FSN Shirou Emiya vs. End of Series Sieg (untransformed, during his fight with Amakusa Shirou)
- UBW Shirou Emiya vs. Siegfried Sieg (during his fight with Saber of Red)
- Heaven's Feel Shirou Emiya vs. Siegfried/Frankenstien Sieg (during his fight with Karna)
Bonus:
Composite Shirou Emiya vs. Composite Sieg (assume no time limits for both)