Crusher
,
thought to maybe add Soul before it but SoulCrusher would make the name rather long.
So just
Crusher
, plain and simple.
Another would be Steelfist/Steelclaw but they don't sound as good.
My first thought that hit me was "Harambe" too, but I guess that can't be helped because of the meme, you guys are right to not take any of these suggestions. What I would suggest is to have his examine somehow refer to him as a tribute? Although it's not necessary at all imo.
"It is our attitude at the beginning of a difficult undertaking which, more than anything else, will determine its successful outcome' - William James.