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Help my choose my next Tech R3

I’m looking for some input as I pick my next Tech R3.
I’m primarily looking for a defender, but frankly would prefer a dual threat. I’m leaning pretty heavily towards Sentinel, although Red Skull is also up there. Probably would be going Red Skull if he was awakened. The only R1 that is a candidate is Peni, who I have duped and at sig 100. Arcade is arguably a better defender, but even with his buff feels like the least dual threat. Again might have upped his stock if he was awakened.
I play across all game modes except War, and while I play BGs I don’t play at the top tiers. Usually pretty much stop when I get to GC aside from daily milestones.
Finally, I’m going to R3 another tech after this one, and that will probably be a bit more offense oriented. Either P2099 or Ultron.
Who would you recommend?
Here are my Tech R2s:

I’m primarily looking for a defender, but frankly would prefer a dual threat. I’m leaning pretty heavily towards Sentinel, although Red Skull is also up there. Probably would be going Red Skull if he was awakened. The only R1 that is a candidate is Peni, who I have duped and at sig 100. Arcade is arguably a better defender, but even with his buff feels like the least dual threat. Again might have upped his stock if he was awakened.
I play across all game modes except War, and while I play BGs I don’t play at the top tiers. Usually pretty much stop when I get to GC aside from daily milestones.
Finally, I’m going to R3 another tech after this one, and that will probably be a bit more offense oriented. Either P2099 or Ultron.
Who would you recommend?
Here are my Tech R2s:

Help my choose my next Tech R3 109 votes
1
Comments
For defense sentinel is a no brainer.
He's a solid defender and also a solid attacker.
And he's an especially great counter for ..... Sentinel (should be able to 100% him but I'm dumb and kept forgetting to mix up my specials in this last BG meta).
I'm so tired of seeing his dumb smug metal face in Battlegrounds.
So I simply list up my R3 and R4
IM
P2099
RS
Jack
Warlock - R4
So, you see I'm not following the mainstream in rankings.
I know my choice are not everybody's cup of tea.
Nevertheless I enjoy all of them to play without regrets....and this is the purpose of a game, I think.
And you’re someone who didn’t play last GC meta I guess. If medusa had passive Ai there’s nothing you could do before she goes both unstoppable and unblockable