This strikes me as being exceptionally original and you have some good ability ideas although I have some ability ideas of my own. While this sort of support tank sounds good, it seems very close to alistar and taric as far as abilities (healing/armor minions). I'm not saying that's bad, but I just don't want to see alistar clones from here to infinity and beyond.
passive: Moral Support: Ted is supported by his fellow minions, taking 10% less damage for each nearby allied minion. [[capped at 80%]]
passive: Ted's Righeous Anger: Ted and all nearby allies deal 5 additional damage. This bonus is doubled for minions.
Toggle Aura: Protector's Zeal: Ted redirects 33% of the damage dealt to nearby minions to himself. While this ability is turned off, Ted gains additional health regeneration.
(Ultimate) active: Pile On The Pain: Ted calls a pack of his minion buddies, who latch the targeted enemy champion in place while he goes all 'Ted the Barbarian' on them. Silences and immobilizes the target until the target or their allies deal150/300/500 damage to the minions that are all piled onto the victim.
Active: Decoy: Ted releases a minion-like robot that operates like other minions until struck by a champion.When this happens, the decoy violently explodes, dealing heavy magic damage to nearby enemies.
passive: Minions who otherwise wouldn't be around are drawn to Ted's inspiring presence. Every 5 seconds, a more-dangerous-than-normal minion loyal to Ted appears and follows him around, assisting with enemies Ted targets. Maximum of 8 special forces minions. (they aren't as good as Promotes, but are better than regular minions. When killed, they grant only 1 xp and 3 gold.)
I think you should go more for abilities that summon a bunch of minions to assist Ted in some way, my favorite idea is "Pile on the Pain"
i like your spin. i was thinking to have damage redirected and to have ted give some sort of buff to the minions. Riot i would like to see this champ put into action.