My friends and I are looking for a lost animated/maybe stop motion show about a group of people who hunt down monsters and turn them back human.
They were turned into monsters from some type of virus.
They used some kind of catch phrase with "resonance" or "resistance" in it. I think it was made between 2000 and 2010.
From 2006 to 2012, there was a first person shooter videogame series called Resistance. The relatively primitive animation of the time made human characters look similar to stop-motion claymation.
In the game, Earth is invaded by an alien race called the Chimera who use a virus to transform humans into alien monsters that serve them. The human resistance battles them and wants to find a cure to the virus.
Generator Rex (2010–2013)?
From Wikipedia:
Five years prior to the events of the series, an explosion occurred on Earth, causing microscopic machines called "nanites" to infiltrate the bodies of all its organic life. When activated, nanites mutate the biology of their hosts; living beings with activated nanites are known as Exponentially Variegated Organisms (E.V.O.). Rex is an amnesiac fifteen-year-old boy and permanent E.V.O. who, unlike most other E.V.O.s, lacks physical deformation but has forgotten his past. He is also able to control his active nanites, allowing him to manifest from his body various bio-mechanical abilities and powers. He also has the unique ability to deactivate nanites inside other E.V.O.s, effectively curing them of their mutations and returning them to normal. Working for Providence under Agent Six and White Knight, Rex uses his unique abilities to stop and cure rampant E.V.O.s.
"They used some kind of catch phrase with "resonance" or "resistance" in it."
Providence perhaps?
From the Generator Rex Wiki:
Providence is a global, clandestine military organization that was created in response to the Nanite Event. Providence's initial function was to contain or kill hostile EVOs. Over time, the organization discovered a teenager named Rex Salazar, a human-passing EVO capable of curing other EVOs. Providence then decided to take a more ethical approach to make curing EVOs priority.
Might it be Vor-Tech: Undercover Conversion Squad?
The VOR-Tech Undercover Conversion Squad is a group of secret agents led by Hudson Roarke. Their mission is to stop Hudson's older brother Damian Roarke—known as Lord Matrix—and his evil "Bio Mechs" from infecting the world with a techno-infectious plague. Similar to the M.A.S.K. franchise, the VOR-Tech agents had special masks and transforming vehicles, with special computer systems that imbue them and their vehicles with special powers.
