Sidekicks Gone Rogue

Rogue steals powers, and with Cameo she can steal Sidekicks too! In this case, you're going to focus on other X-Men allies. Load your new best friend up with Danger Room Training and a couple other upgrades, then use Side-by-Side and Game Time to get the most out of them. Jubilee's friend Wolverine is the usual target, but there are some other recommendations below.

Rogue loves having Allies around in general, so try to get one of each aspect on the table and keep them there. Fantomex gets free healing every turn and Rogue's fellow power-copier Synch should be boosting Rogue instead of taking consequential damage. With them and your Sidekick on the table, Superpower Adaptation can access any event in your discard pile when it comes up.

X-Men Sidekicks:

Wolverine deals great damage with piercing and heals himself. He's your default Sidekick if nobody is playing him as a Hero.

Shadowcat ignores guard, patrol, and crisis icons. Great choice if your team already has a lot of damage output or if you're playing certain scenarios or if someone at the table is using 'Pool cards.

Malcolm or Randall both get an extra ready, and heal if you spend resources that this deck is playing a lot of. Pick Malcolm if you need more damage or Randall if you need to thwart.

Non-Mutant Options: These don't benefit from Danger Room Training or Game Time, but they might be useful if your teammates are playing Avengers.

Amadeus Cho has high attack (but no piercing) and gives you free resources.

Captain Marvel draws you extra cards and is really funny thematically.

Ms. Marvel combos with Superpower Adaptation to let you loop events over and over.