Serpenphare?

[MrQun]

Any tips on how to beat that f@cker?

[Ennui]

Don't take damage and deal it to her.

[Muradin]

try to use your AP as much as possible, his big attack is quite hard to counter. The other attacks are quite "easy" to counter tho

[Veilrender]

Let him absorb as many AP as possible. His big attack is easy to parry and instantly breaks him.

[Phate]

using maelle and sciel in team.
using pictos first strike and cheater for maelle
maella must have last change and stendahl skill,
sciel has intervention or fortune's fury
then you can deal around 10 million damage in first turn

[Krea]

I love how @Muradin and @Veilrender litteraly give the opposite advice XD

[m3fallen]

I made 'Gustave' shoot the thing to get to S quickly in his 2 turns with cheater, then used Sciel to get him another turn, shot him again to do the Follow Up ability and deleted it with that.