Team Chaotix makes an appearance in Sonic Heroes 2. In this game, it contains the same characters as in its canonical carnation plus Saffron Bee as an Apprentice.
Team Chaotix are having a lazy sort of day. No-one has rung up to request their services. They are about to turn the phone off, when someone does ring up. Unbeknownst to them until far later in the storyline, the mysterious client on the other end is Fiona Fox. While Espio resumes his skepticist role, Vector overrides him and commands him, Charmy and Saffron with him. Their first instruction is to visit Spring Yard Zone and collect the 10 loose springs that are obstructing the zone - including one at the front entrance. One of the traders in Metropolis allows them into Spring Yard Zone via his back door, so all they need to do is work backwards.
Next, they are asked to visit Marble Garden Zone. Some of the trees in the level are ripe, and its fruit are dropping. The trouble is, this creates a menace for passers by as they are likely to stand on it. Therefore, Team Chaotix are tasked to collect 50 pieces of fruit from the floor. (Later, these fruit can either be used to feed the chao in the Chao garden or can be sold in the shop. The fruit can be any combination of the following: Apple; Apricot; Cherry; Coconut; Lemon; Lime; Lychee; Mango; Orange; Pear; Peach; Plum.)
Once complete, Fox is not heard from again for a while. We see why: Nic takes a wrong turning, finds Fox, offends Fox with her trespassing, and they bicker. Whilst at it, Team Chaotix decide to visit the Chao garden to deposit the fruit: It is the player's decision whether he feeds the resident chao the fruit, or sells the fruit to the shop. (What will happen is this: Either the shop owner sees Chaotix feeding the Chao and does his own research as to the source, or if sold, he will ask and Chaotix will tell - thus hurrying up his supply of it. Either way, eventually fruit will become in stock.) On their way out, they pass Team Rose, crestfallen from Team Archaic eluding them.
Speak of the devil: they decide to pop in to their base and encounter Team Archaic, who are informed: that the trains between Mystic Ruins South and Mystic Ruins North are broken down; keep the heck away from the Chao garden due to it being inhabited by Team Rose. They quickly scram; merely the fact that they were within honking distance of Team Rose was enough to make them bolt, and all the way up to Sandopolis. The minute Team Rose abscond from Metropolis, Nic absconds from Mystic Ruins Underground and thus Fox is able to further order Chaotix. Their next mission: Visit Hill Top Zone. The Mountain of Destiny, which had laid dormant since it last erupted in 1994, had started chucking up smoke again, and thus Team Chaotix are instructed to investigate. Action stage Hill Top Zone is played.
At the end of the stage, Team Chaotix find themselves at the top of the mountain. There, they find that Seismatron had rebooted; the cable car used to transport people into the volcano had broken; the cable had snapped, the car had fallen on to the wrecked Seismatron and the impact caused the Seismatron to reboot. Angry, it was irritating the magma chamber underneath, and thus a boss fight ensues. After its defeat, the Seismatron explodes, sending shockwaves throughout the volcano; Team Chaotix are blown out the volcano, with a number of boulders following.
Chaotix lands in Metropolis. As boulders are heavier than the Chaotix, they land far faster; most only go as far as Oil Ocean, thus having no effect. Some others go into Mystic Ruins South and roll down into Mystic Ruins Underground, disrupting Fox. One, however, does not. It comes hurtling down in front of Metropolis and blows up right in front of the base, causing frontal exterior damage. Chaotix panic and wonder what to do, when along came
polly Team Underground, who decided to pop down anyway. Manic and Sonia enter to practice, while Tails and Cosmo set about repairing some of the boulder-blameworthy damage.
They get interrupted. Several minutes later, Tails and Cosmo come barging in, bellyaching about nothing - or about being forced to see such. As the snoopy sextet circle outside, they muse an eyesore emerging from above. It is the dreaded Egg Carrier, as spanking as it was when it was first released, rising from the ruins of Launch Base Zone. Team Underground decide to abscond to Mystic Ruins North, fire up the Tornado and teach 'man a lesson; Team Chaotix decide to remain in situ should the client call back. Sure enough, she does: in her perspective, we see her instructing Team Chaotix the next mission. That is, to go to Aquatic Ruin Zone. Something or other - the Metropolitans like to blame a rogue Boo - has infiltrated the Water-Powered Lift, and has changed the level from 3 to 1, forcing the water much higher. Unfortunately, this has resulted in the oil above it also rising, and thus it chucks up far more than usual. Team Chaotix need to go into Metropolis underground via Aquatic Ruin Zone and Oil Ocean Zone, all the way around, and set the switch back to 3.
Unfortunately for Team Chaotix, they have to go all the way back around because, unlike Knuckles, Chaotix cannot climb. On their way out of Aquatic Ruin Zone, wild Team Archaic appeared, and informed them that it is Fiona Fox who is generating their requests, and they've just fought them. They advise Team Chaotix to pay her a visit in Mystic Ruins Underground. Mystic Ruins South begins.
When they come down to it, they meet Fiona Fox. Expecting payment, Chaotix's request causes things to boil over, and eventually a boss fight begins. At the end, Fox's stabilised boulders get disrupted again by some severe vibrations in the underground and end up encasing Fox. The storyline ends with Team Chaotix congratulating themselves on a job well done amidst the recalcitrant roars of Fox.
Team Chaotix performs some tracks in the sound test; each attendant member of Sonic Heroes resumed their roles (Espio shamisen, Charmy bass drums and Vector vocals), Vector also plays his keyboard from back when he was a member of Sonic the Hedgehog Band and Saffron is skilled in vocals and vocal effects.