I thought Bertha was a thin person whose mutant power was to become super-obese, not the other way around (Else, why the comment about "People who can look past the fat")
That being said, poor Monkey Joe :( ("Unnatural acts???") and I like Deathurge coming as a species specific manifestation (Though I also thought Deathurge was the embodiment of suicidal impulses and inherent death wishes)