|"A gun's a mighty nasty thing, and yet it's often all that stands between you and losing your skull."|
|- Innavedr ch. 186|
Tweak is a crystal pony from western Aurum province. A farmer by trade, he helped revive Crimson in the early chapters of Innavedr and eventually went on to fight in the raid of Searo's Hold and the battle of Blue Nova. Later on, he and his brother Lucky Strike followed Crimson and the others on board the Tarkington to join in the fight for Val Roa.
Stasia explains that they are of the "sapphire variety", which means that their resonance can interfere with magic-sensitive creatures and can be used offensively.