Oh cool, not very knowledgeable about comics and such I only know of X-Men Evolution not in full just bits I caught when i got home from school. So would Spyke be the same like Emma?
Spyke was always a OC character, him being Storms nephew and african american never made any sense given Storms backstory. The writers openly admitted he was created entirely for the purpose of having a black american on the cast and that they wanted to do a "White male mutants are still racists" kind of thing with him but editors shut that down. All bets are off with him since he was a writers pet which means source material will be ignored the moment it's inconvenient.
Storm is a first gen mutant and so was Spyke and both only have one mutation. If I recall correctly, his mutation just progressed as the show went on rather than evolved, it was more an allegory for going through puberty than anything else; there were even little jokes comparing him growing spikes to body hair and shooting spikes while asleep to having a wet dream.
Mutations grow and recede with the user, someone with super stregth would get stronger as they mature just like a telepath would get weaker as they got old and their mind wasn't working as well anymore. Spykes bones getting bigger wasn't mutation evolution, just maturation.
So no, he's not like Emma at all.