Let's go over the cold, hard facts;
The first guardian, Rezyl Azzir was a Titan.
The Last Surviving Iron Lord, Lord Saladin is a Titan. (Not counting Lady Efrideet, as she left the Iron Lords).
The Vanguard Commander, Zavala is a Titan.
The Guardian in charge of the crucible, Lord Shaxx is a Titan.
The wall which protects the last city was made by Titans.
A Titan killed Crota (Look at The Taken King live-action trailer which was created by Bungie. It is plainly stated that it was the Titan who killed Crota).
A Titan, Kabr killed a Gorgon himself and hammered its corpse into a vessel for the Light, turning it into a shield that maintains a small space of stable reality around it, aka the Vault of Glass's relic.
In layman's terms, the entire leadership for the Guardians are all Titans. So yeah, #TitanMasterRace
Go ahead, try and prove how your other classes are the master race ;)
- Lord Aflame.
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You forgot the relic used to take down the Templar/atheon in VoG was made from the light of a dead titan.