Pepper can heal allies and a has decent dodge chance, which automatically triggers said healing effect. She can also inflict some crowd control effects.
Tower of Fantasy Team Comp
The two best characters for the DPS team are King and Nemesis. The third one could be Crow, Tsubasa, or Samir. (X2 DPS + X1 Support Utility.)
The two best characters for the Tank team comp are Huma and Meryl. The third one could be King or Zero/Nemesis – one DPS. (X2 Tank + X1 DPS/X1 Support. )
The support utility team comp would have x2 utility characters and X1 DPS, i.e., Samir. Utility characters that you can use in the utility team comp build could be Nemesis, Zero, and Cocoritter. (X2 Support Utility + X1 DPS.)