Bertolt Hoover (ベルトルト・フーバー Berutoruto Fūbā^?) was an Eldian and one of Marley's Warriors. He possessed the ability to transform into a Titan known as the Colossus Titan.

Is Bertholdt a Titan?

Bertholdt's Colossal Titan form was one of the more heavily-deformed Titans seen in the series - he appeared to lack skin entirely and his jaw and facial structure seemed to be heavily altered from his human form.

Is Armin's Titan bigger than Bertholdt?

5 Armin's Colossal Titan Is 60 Meters Tall

This was how he came into possession of Bertholdt's Colossal Titan. Although they share a height of sixty meters tall, Armin's Titan form is slightly more slender than his Marleyan counterpart.