Daredevil is worth consideration for most solo protection decks, and close to a must include for solo or multiplayer in certain scenarios. First of all, he's a two-cost ally that can ping twice for one and then block, or more importantly, thwart for two and and then block, which is great value and something most solo Protection decks sorely need.
What really sets him apart from other Protection allies though is his ability to deal with annoying minions that ping you for one damage, like Ultron I and II drones, against which he's like an Energy Barrier that never runs out of reflection counters — you can keep him out for a long time as long as you promptly discard Upgraded Drones attachments.
He's perfect tech for dealing with annoying guard and patrol minions that only attack for one damage but have tough, like Armored Guards or Ultimate Bio-Servants — in multiplayer, instead of having him chump a villain attack, I would consider leaving him on the board as long as I could to defend against those guys and remove their tough status cards, unless another player has a lot of piercing attacks. For this kind of minion, Daredevil is the clear choice over Victor Mancha. While V.M. also allows you to ignore one of those minions, Daredevil can remove it from the board after a few turns if your hero is too busy dealing with side schemes, other minions, etc.