Six Star R3 suggestion Mutant and Tech

Please help me and suggest whom should I take to R3 from Tech and Mutant.

Comments

RMags, AA (if you can get him awakened) and Colossus are all good options for Mutant, HB and Ultron are also good for Tech

Colossus or HB [great for monthly cav EQ]

First priority should definitely be red mags.

RMags, AA (if you can get him awakened) and Colossus are all good options for Mutant, HB and Ultron are also good for Tech

I already have 5* Red Mag and Colossus Maxed out and awakening AA can take ages. So I am confused.

First priority should definitely be red mags.

Already maxed him as 5 star

Who it should be

Ultron or HB ?

Ultron

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