Maelon Heplorn

Maelon is a salarian geneticist, former operative of the Special Tasks Group, and former student of Mordin Solus. With Mordin, Maelon participated in the modification of the genophage, a biological weapon of mass destruction, the effects of which had been wearing off. In 2185, he was reported as captured by krogan warriors attempting to reverse the effects of the genophage virus. Mordin requested the aid of Commander Shepard in retrieving Maelon from his captors.

Upon confronting Maelon, it became apparent that he was not working under duress and instead volunteered his services to the krogan. He expressed extreme guilt for his work on the genophage, which he considered to be a form of genocide.

Maelon claims that, despite the genophage, the universe is no less chaotic, citing the batarian and geth attacks. He points out how male krogan must now fight over females and become mercenaries or pirates because they have no alternative. They'd be thriving in a cultural renaissance if salarians didn't think to become judges of the universe. Maelon also claims that if the Council had a krogan army, they could have stopped Saren and the geth. His reasoning is that an increased krogan population would've compelled the Council to take certain steps, consider colonial rights and have their fleets become more vigilant. Mordin dismisses this as pure speculation, and insists that their work on the genophage was correct given the verified data.

Mordin Solus and Shepard put a stop to Maelon's experiments, and Shepard is given the choice of allowing Mordin to execute Maelon or let him live. If Maelon is allowed to live, Mordin suggests that he go to Omega and run his own clinic. Furthermore, Maelon won't be able to restart his work, for STG can cover their tracks, and other krogan would not be willing to believe that he could cure the genophage. Shepard also makes the decision on retaining Maelon's research data or destroying it.