Snaptooth Mission Bugged
Had the exact same thing happen. Reset it and it happened again. When he spawns as an EB, he cons as an ally and is not a valid target - making the mission impossible to complete.
Paragon City Search And Rescue
The Mentor Project
Confirmed. Snaptooth is bugged. I was the mission holder. We tried this a couple of weeks ago.
Reported to GM and GM confirmed to me that it is a known bug.
Team was reporting that Snaptooth still showed as enemy with the red target corners on him, but I showed him having blue target corners like he was an ally. He wouldn't attack anything and we couldn't attack him.
GM autocompleted mission for us and I was the only one who received a reward screen.
Team also found out that Exit button was disabled and had to employ alternate means of leaving, from being defeated by a mob and going to hospital, using Ouroboros portal or going back to the mission entrance.

I wish we had the option to drop it, only for those that still have it. I am experiencing the same thing.

Server: Defiant - Redside /bugged ingame already.
Still had DJ Zero as a contact so I thought i'd pick up the mission for amusement value for the team I was in (all villains).
On entering everything was fine, snappy goes over as an LT, no probs. Goes down as a boss, no real problems so far. Up he pops as an Elite Boss, not 20 foot from the portal.
And stands there. Untargetable.
We beat up all the incoming garden gnomes (also noting that he's healed by our AoE heals as well) and apart from opening fire on one bunch of gnomes mostly just stands there like a big old twerp.
We leave and successfully reset the mission, same thing occurs.
Anyone else able to test this?
Defiant 50: Blonde Justice inv/ss; Lady Aminta emp/elec; Sierra Colt merc/traps; Tess LaCoyle elec/elec (blaster); Powerstorm elec/elec (brute);
Union 50: @Steel Dancer WP/DB; Blast Pulse Fire/Rad (corr); Bitter Twilight Earth/Psi (dom); Compassionate Emp/Psi;
Freedom 50: Incandescent Blaze ElecAm/Fire;