I’m in the same boat man, I love the Viper/Dante duo but have tried so many 3rd characters (Ironman, Morrigan, Strange, Arthur, Felicia, MODOK, Strider, Dormammu, Doom, Chun, Magneto)
If you’re concerned about horizontal control with Dante/Strider (which I wouldn’t be as a Viper player, personally) you can run weasel shot – see Crazy Joe matches for reference. Excellent team and construct, imo.
For Viper/Dante/Akuma – sure, Viper doesn’t get much out of Akuma, but Dante does! See SumBrwnKid matches for reference. I believe Viper can still function with just Jam Session as a neutral assist so just don’t use tatsu unless it’s purely for specific situations (projectile sniping, etc). If you like this team, I’d say use it.
…this transitions to the next team – Team Chrisis – this team utilizes jam session as its only neutral assist but it is one of Viper’s strongest team constructions imo. (Viper/Morrigan-Harmonizer-/Dante) Sick, sick, sick team. Viper gains access to jam session, practically unlimited meter for EX, TAC infinites, killer secondary shell, decent DHCs – this team blows my mind, haha, I love it.
I think Unibeam, Plasma Beam and Disruptor all have very different utility for viper even though they are all beam assists – I think this is one of the more interesting topics in Mahvel. Unibeam is excellent for neutral dominance and combo extension (strong lockdown on block and you know exactly where they will be standing on hit to maintain that neutral dominance). Plasma beam is good for clearing the horizontal and combo extension, but not so much for neutral dominance (if that makes sense, hahaha) imo because it soft knock downs, leaving your opponent many options to wake up with that you cannot react to as easily (roll forward, backward, neutral – call assist while doing this or not). Disruptor is an excellent counter call assist, say, if you want to clear a drone or missile call from the opponent or something, etc (like if you’re neutral jumping and burn kick cancelling/double jumping, opponents typically like to call assist at this point, disruptor is perfect here).
Each beam has excellent documented examples of how to use them with viper: Kbeast uses disruptor (also excellent assist for Dante himself), Marlin Pie uses plasma beam, not many viper players use unibeam (I do, haha) but check out DapVip for how well unibeam can work with Dante I love watching his Dante/Unibeam.
I’d say you’re on the right track to making an optimal Viper team with these characters alone.
Viper/Morrigan/Dante
Viper/Dante/Magneto
Viper/Magneto/Dante
Viper/Dante/Akuma
Viper/Dante/Strider
Viper/Strider/Akuma even? Never thought about this until now.
Viper/Doom/Dante
Viper/Ironman/Dante
Hawkeye might be a good fit like Viper/Dante/Hawkeye but I’m not familiar with Hawkeye really and can’t think of any Dante/Hawkeye streamed players off the top of my head. Hawkeye’s horizontal assist seems like it’d be similar to unibeam in terms of utility, right?