I should probably work on a good Defense team for Arena and a better second attack team for GW. What are some good team combinations for those two purposes?

My 6* characters are: Cermia, Lilias, SS Bellona, Bellona, Luluca, Angelica, Tamarinne, Vivian, Judge Kise, Watcher Schuri, BBKarin, MA Ken, Ken, Lidica, Clarissa, Luna, Dizzy, Angelic Monty, Iseria, Destina, Sol, Krau

Some characters I could build are: Baiken, Aux Lots, Kitty Clarissa, C.Mercedes, Ravi, Charlotte, Kayron, Melissa, R.Carrot, Serila, Chloe, Sigret, Kise, Sez, Yuna, C.Zerato, Elena, Yufine, Vildred, ML Basar, SS Achates, SB Aramintha, A. Cidd, A. Coli, C.Dom, Alencia, Diene