4* Blade, Elektra or Gwenpool to rank 5?

ZeSpecter

I have just received enough t4cc to rank up a 4* skill champ to rank 5.
Blade: Dupe level 25
Elektra: Dupe level 45
Gwenpool: Unduped

Who should I rank up?

Nanimal79

All are good, Blade is the best.