My Blue team had 2 different teams; team Breaker, and team Boss.
Unlike Red and Yellow, Blue does not have a traditional healer, so surviving the long term is unorthodox. For team Blue, GENIE is the S-tier hero. He is a great healer and provides other forms utility to help you survive. Both my breaker team and boss team rely on Genie to keep everything together. If you have access to both his Disks, use them—Mike’s disk is great for breakers, Elsa’s disk is superior for bosses.
Breaker: My team consisted of Aladdin, Genie, Alice, Elsa, and Megara. Alice, Elsa, and Aladdin mixes all the damage types you need to hurt every kind of enemy. Genie is the main healer and Meg is always manually linked to him at the start of battle to keep him from getting KO’d. This is key because Genie can’t heal himself.
Boss: This team is a little different—Hercules, Hades, Genie, Elsa, Alice. Hercules can heal himself and becomes invincible too, so he’s pretty self-sufficient. Genie is here mostly to rapidly provide more energy, allowing for Elsa, Alice, and Hades to clean the stage more frequently. Genie should be using his Elsa disk for the extra basic damage, which gets a ton more mileage out of in this case.
Other members: Woody with Buzz’s disk can easily replace Alice, and he can provide the team so much energy to work with. He’s also an excellent counter against wards that slow down your attack speed. Zurg is often more potent than Elsa, but his position is a lot riskier. So while Elsa is more useful, you can opt to replace her with Zurg if you need to kill things more quickly.