Been really wanting to tackle this guy for a while. Was one of my favorite storylines back in the day. Magneto's conscience in Professor X's mind creating this monster was just too cool a concept to pass up reading, and making a custom of. Hated the crab version Toybiz Legends put out. I decided to take a tackle at him using CNC parts, inspired by Stevid's Apoc and Thanos CNC customs. Recipe as follows
Torso/Thighs: CNC Validus
Lower Legs: CNC Stel
Head: Sculpted
Arms: Marvel Select Avenger Hulk
Armor: Some sculpted, and some taken from Old Toybiz figure

Professor X
ML Infinite X-men Legends X-men Cyclops body
Professor X Head
Assassin's Creed Fists

For Onslaught, I cut slits In hulk fists and inserted parts of the claws from the old 90s toybiz figure. Attached various armor from that figure as well. Sculpted the pelvic belt thing, Upper thighs, chest light, neck pad, parts of the armor, and the head in the bubble is a sculpted over and repainted wwe figure to look like Nate Grey or Prof X Trapped in back. The head is an original sculpt, based it kind of on the minimates look to give it a bit of the Anime vibe that the art style kind of followed during the original Onslaught saga. The head can be removed by popping it off the peg just like on the smaller figures, and if one wanted to put a red sKull head on there to make Red Onslaught they could. Plenty of skulls will be around with Halloween coming up soon.

I repainted and reshaped Prof X Head to have a tougher look than the lipstick wearing old Legends look. His feet will slide in to Onslaught kneepads when pointed down, and you can pose him like he is being projected from Onslaught's chest.

Anywho, I hope you all like him. Thank you for looking, and more pictures can be seen at the link.