Grok
Dwarf Paladin 7
AC: 19 HP: 77/77 PP: 10 PIv: 9 PIs: 10
HD: 7/7d10, Conditions: none

With the way forwards cleared, Grok doesn't hesitate. With a roar, he rushes forwards, taking up a guard stance before Senna as his glaive cuts down at the nearby wererat.
Spoiler: OOC
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Moving to one square east of Senna, and attacking the northern wererat twice(With reach.)

(1d20+9)[15] Attack 1
(1d10+6)[14] Damage 1

(1d20+9)[13] Attack 2
(1d10+6)[8] Damage 2
If either crit, will smite.

Reaction: If an AoO is triggered AFTER the nearer two enemies have acted, take advantage of relentless avenger(After sentinel striking) to move behind Senna(Or, ideally, displacing her backwards)