A full tank Cho'Gath.

Sorcerer's Shoes [Furor]
Rylai's Crystal Scepter
Athene's Unholy Grail
Seraph's Embrace
Malady / Nashor's Tooth
Rabadon's Deathcap

orianna

seraphs
zhonyas
deathcap
rod of ages
sorcerers
void staff

Karthus

Sorcerer's Shoes
Rod of Ages
Will of the Ancients
Rylai's Crystal Scepter
Liandry's Torment
Rabadon's Deathcap

Singed?

Mercury's Treads
Trinity Force
Zeke's Herald
Atma's Impaler
Maw of Malmortius
Wit's End

idk Dari?
Sorc shoes
GUnblade
Lich Bane
Deathcap
armguard
guardian

I'd have to say Akali.

Rod of Ages
Sorcerer's Shoes
Rabedon's Deathcap
Zhonya's Hourglass
Warmogs Armor
Guardian Angel