Forest titan on neutral can basically solo this guy. If you want to ensure the fight goes well bring the ice titan. Position the forest in front of where he spawns and the ice behind him, let the forest tank and wail on him with the ice. For alpha, mega mek can solo but if you want to be safe bring ice and forest. If you have max mutated tames bring 10 dreadnoughtus with max saddles, they should have around 500k hp and 1k melee. Put them on aggressive and they'll handle the fight within 10 minutes. The mega mek is necessary for alpha fights or the titan takes 90% reduced damage making the fight impossible.