The Toxic Rats is one of two opposing teams in Total Drama: Revenge of the Island. The Toxic Rats originally consists of B, Dakota, Dawn, Lightning, Sam, Scott, Staci, and later on, Brick. Two episodes later, Scott switches teams with Jo. The Toxic Rats' logo is a green, four-armed angry rat standing upright with its fists drawn out. It is mounted on a stained pale yellow circle with a green ring around it.
In Bigger! Badder! Brutal-er!, the Toxic Rats are formed after a race through the forest, according to the order the contestants cross the finish line. Lightning, Scott, Dawn, Dakota, Brick, Sam and Staci are those selected as members of the team. This team is considered one of the most dysfunctional teams in the series where most of its members are easily distracted or unhelpful at all. From the very first challenge, Staci spends more time talking about what her ancestors allegedly invented and Dakota is posing for her paparazzi. Ultimately, B come with a plan that almost succeed but due to misfortune, they lost the challenge despite coming in first place. For sprouting out nonsense non-stop, Staci is eliminated that night.
Behind everyone's back, Scott is planning to find the McLean-Brand Chris Head for himself while sabotaging the challenge for his team. In Truth or Laser Shark, the Rats almost win the challenge but Dakota got distracted by the presence of paparazzi again, allowing Cameron to win for his team. Because of this, along with a premonition from Dawn, Dakota is eliminated that night. In Ice Ice Baby, Scott begin to target B, seeing his inventions a threat to his plan. He also plans to get rid of Dawn, finding her "skills" creepy. Near the end of the challenge, Scott notices B's giant mirror melting the Maggots's ice fort. Not wanting to win, Scott throws a snowball at the mirror, deflecting the sunlight to the Rats's fort instead, securing their defeat. Scott immediately blames B for sabotaging the team and tells everyone to vote him off much to his satisfaction.
In Finders Creepers, the Toxic Rats finally win their first challenge due to Sam's determination, much to Scott's frustration. Brick is transfer to the team as it was supposed to be a non-elimination round. His status as the "new guy" makes him unable to fit with the other guys on the team in Backstabbers Ahoy!, especially Scott. He takes charge of the team and win the first challenge. They however lost the second round after Scott claims that Jo had a lucky shot on Sam. However, Dawn immediately see through his lies and vows that Scott will pay for his betrayal. Unbeknownst to her, Scott overheard her plan and framed her for stealing the other campers' belongings. In Runaway Model, the remaining members dubbed themselves "Team Man" but outcast Sam. They attempt to use Sasquatchanakwa as their model for the fashion challenge, but he rages and kidnaps Lindsay. Sam almost wins the challenge for the team but ran out of power at the last minute. Being deemed as their weakest link, Sam is eliminated that night. At the same time, Jo and Scott switch teams.
A power struggle between the remaining three members occur in A Mine Is a Terrible Thing to Waste, but in order to get rid of Brick once and for all, Jo pulls Lightning into allying with her. The Rats loses again after Brick decides to help his former team, bricking his gold statuette in the process. Because of this, he is eliminated that night. In The Treasure Island of Dr. McLean, the remaining two Rats struggle due to them being outnumbered but Jo ultimately found out where Gwen and Sam are hidden and dug them out, ending the Rats losing streak.
The teams are merged in Grand Chef Auto, with Lightning and Jo being the only members of the team remaining.
|Toxic Rats teammates|
|B | Brick | Dakota | Dawn | Jo | Lightning | Sam | Scott | Staci|
|Contestant||Gender||Rank||Team rank||Episode||Reason for elimination|
|Staci||Female||13th||7th||Bigger! Badder! Brutal-er!||Her constant comments about her relatives irritated her teammates.|
|Dakota||Female||Returns||Returns||Truth or Laser Shark||She costs the team the win by being too distracted with the paparazzi.|
|B||Male||12th||6th||Ice Ice Baby||Scott saw him as a threat, and sabotaged him to make it seem like he lost the challenge.|
|Dawn||Female||11th||5th||Backstabbers Ahoy!||She was accused of being a thief after Scott framed her for stealing from the other contestants.|
|Sam||Male||10th||4th||Runaway Model||He failed to win the challenge for his team, seeing the challenge as a video game.|
|Brick||Male||9th||3rd||A Mine Is a Terrible Thing to Waste||He was too assertive, and helped the other team with the mutant gophers.|
|Jo||Female||5th||2nd||Up, Up And Away In My Pitiful Balloon||Cameron and Lightning voted her off due to their dislike towards her.|
|Lightning||Male||1st/2nd||1st||Brain vs. Brawn: The Ultimate Showdown||He pinned Cameron down for three seconds in the final challenge, thus winning the million dollars; came in second in Cameron's ending.|
- The original team name for the Toxic Rats was the "Radioactive Rats." Christian Potenza confirmed that the name for the Radioactive Rats was scrapped on September 27, 2011 because of the nuclear disaster in Japan.
- This is also the first team in the series to have a name change for the finished product of a season.
- This is the first team in Total Drama history with a green-themed logo to be the weaker of the two teams in its season.
- This is the second of three teams to, at one point, consist entirely of one gender before the merge, the first being Team Chris Is Really Really Really Really Hot and the third being Pimâpotew Kinosewak. After Dawn's elimination, the four remaining members are all male. However, Jo switches teams with Scott soon afterward, leading to a female on the team once again.
- This team has the larger amount of members of the two teams in Total Drama: Revenge of the Island, as it started out with seven against the Maggots' six, and then gained two additional members.
- This team features the highest amount of members eliminated consecutively out of any other team in the series, as they lost six members in a row.