The question of how to raise your frogs of Guk faction gets asked a LOT. There are three main ways and one is VERY easy and the other two are much harder.
Of course if you're a twinked out toon-stud with über gear that likes to brag about how you soloed the Ghoul Lord at 35, blah blah blah, then this doesn't apply to you.
If you have awful faction and can't even go to Guk without invisibility, kill Rungupp in Toxxulia Forest (spawns in extreme SW corner of the zone). He spawns every 7 minutes and is level 5. Kill him 20 times and you'll probably be dubious to Froloks of Guk.
If you are already dubious and just want to raise your faction so you can kill Live frogs and not trash your faction the best way is to go to Lower Guk dead side and kill undead frogs. If you can muster enough toon power to kill the Ghoul Lord you will get a large positive faction hit, but just killing undeads will boost your standing.
if you're higher level and keyed you can go to Old Sebilis and kill frogs there for positive Guk faction.

