High Kinlord Rilis. Even though I've completed The Banished Cells countless time since launch, his lines never fail to amuse me. The voice actor knocked the ball out of the park.
I agree 100%, love his lines, and I still laugh at them
I do group dungeons everyday, so definitely there are those mentioned previously that are indeed quite epic, especially Arkisis and High Kinlord Rilis. In addtion, there are some other lines that have left me quite some impressions.
the epic ones
"Is it Malice in your eyes, Marcus? Have I rekindled your passion for causing pain?" second boss in TDC
"Every cut, every scratch, this must be the finest meal in years!" Lady Thorn in CT
"To me, lookers, let us hunt together!" Vykosa in MHK
"Such a waste of precious time!" Baron Zaudrus in TC
"The current is on my side" final boss in SWR
some amusing ones
"No, stay away from Spellbreaker!" Zaan in SCP
"Congratulations, you've pasted the first trial.", "Yes they've bested the finest sloths, drunkers and fools we had too.", "Adorable, shall we give them a pendent then?", "I say, let's see how these soft skins fair against a real challenge" the pack in Blessed Crucible, those lines form the Beastmaster are amusing as well ofc.
"You dare kill my pet? My sweet boy... You'll pay soon enough!" by one of the witches after the first boss in IR