I'll try to make this quick.

The boss arena is divided into two sides. On the left side we have fire themed areas, and on the right we have ice themed areas. Within the fire themed side there's a small pen containing a vog cub, and on the ice side there's a pen containing a skolver cub.

Also on the left side, in among the fire traps and bramble, are respawning fire pots, and likewise there are ice pots to be found on the right. To access the vog, one must throw an ice pot at the pen, at which point the energy-leash holding him inside will break for 6-7 seconds or so allowing him out. He'll aggro on the player that threw the pot, and engage in an endless stream of homing alpha-wolver style bites, though slightly slower to make it still possible to outrun while gunning solo. Once the time expires, the leash re-forms, pulling him back inside the pen. Same idea for the skolver side, have to throw a fire pot.

To make things fun, while penned the vog and skolver can do a bark which summons, I dunno, 4 sets of either 3 ashtail/frostifurs or 1 alpha ashtail/frostifur which do their usual wolvery magic chasing you around and whatnot.

I'd like to see it as a T3 boss, just for the sake of teleporting wolvers. Plus T3 needs some boss love and a consistently farmable beast stratum.

Edit: token reward ideas

Gun: Piercing damage 3-shot gun with slow-walk mobility while shooting. Each bullet would do, say, 1/2 the damage of an equivalent magnus line shot, and the crafting line would split into one version that inflicts fire status, and another that inflicts freeze. Charge shot would fire a line of biting holo-wolvers, sort of like the holo-snarby on the DBB or the wolvers on the WHB.

Shield: Piercing protection which branches into freeze protection with gun ASI buff, and fire protection with bomb damage buff.

Bomb: Like a cluster bomb version of the DBB, with lines branching to fire and freeze status. At 5 stars, each little bomb in the cluster would have a biting holo-wolver.