"There are a few disturbing things I feel we should note. First off, we did not encounter any actual Sarpah. I'm afraid that, while we can use the captured scientists to gain intelligence, we still lack hard evidence of AEGIS working with the aliens. Secondly, that creature we battled--it's mutations meant that it was outside my influence. Such beasts would be a blight upon the planet, but they may also not be vulnerable to the bio-agents I carry against extraterrestrials--a 'worst of both worlds' scenario, very literally."
He takes a deep breath. "Which brings me to my last, and arguably greatest personal concern. You see, this is not the first time I have encountered such a thing...."
The war was not going well. The initial arrival of the ARES heroes had made an impact, yes, but the Sarpah had a huge lead in terms of position. They had also demonstrated a level of ruthless cruelty that crossed the border into sadism--in one infamous clash in Germany, the Sarpah had actually strapped human children to the outsides of their ground vehicles before rolling in. They didn't even announce this fact--they simply waited for the Earthlings to discover the grisly remains after the first exchanges--five children slain by ARES heroes before anyone realized there was even a possibility of such a thing happening....
Such brutality was not unknown to humanity, of course--while possibly more literal use of 'human shields' than usual, many could still recall the days when it was common tactics for terrorists to house weapons in hospitals and orphanages.
Among the enhanced humans employed by ARES, revulsion induced by these tactics instilled a determination to not descend into similar heartlessness. The heroes told one another that they would be exemplars, the best Earth had to offer. They would accept honorable surrenders, protect civilian lives to the best of their ability, and never endanger innocents just to gain a battlefield advantage.
Sadly, it turned out that their masters lacked such high ideals.
It was a research facility in the Swiss Alps. The Sarpah had managed to cut off ground support via aerial bombardments--this was still before the heroes had managed to neutralize their floating fortresses--and thus were holding the mountain-fortress in a state of siege. ARES High Command decided that the scientists in the facility needed to be brought out, so a team of heroes was assembled to rescue them.
Most of the heroes were aboard Mecha-Mole's Big Bore, slowly making their way to the facility from underneath, but as Gothm could pass through the Mother's Bones more swiftly, he went on ahead to prepare the scientists for extraction, and to tell them to gather their research data.
But upon emerging, he discovered an abomination. The scientists were cross-breeding animals native to Earth with Sarpah DNA, creating horrific beasts, many of them tortured by their condition. The head of the research project, a cold, calculating man named Allessandro Acerbi, who seemed unable to perceive Gothm's revulsion at the horror show, explained that he would release the creatures once all the scientists were aboard the rescue-craft, to harry the besieging Sarpah. He declared in icy tones that this was necessary to show the 'alien threat' that the Earth would never be theirs. He also boasted that the creatures were capable of breeding in the wild.
Gothm shakes his head. "As it turned out, the operation was a failure. Apparently the Sarpah had been bringing in their own version of 'bunker buster' ordinance; almost as soon as this plan was laid out to me, they began bombardment in earnest. Dr. Acerbi attempted to release the monsters in retaliation, but... well, oddly enough, a tremor--most likely the effect of the bombardment--caused an avalanche to cover the bay doors in snow and rocks. The entire lab collapsed around me under the impacts, and I barely escaped through the Bones of the Mother with my own life. I'd heard that there were no survivors, and that the lab was completely destroyed, but it would seem I was... misinformed. Perhaps even then, the Earth's High Command was beginning to feel concerns about my willingness to just follow orders."