The rules are simple! Post any guardians that you would want to see released! *Note: Bilbo and Bert the Troll will be released in an upcoming patch.
Here are mine:
Sharku: Searing Prod - Momentary movement speed increase at the cost of health. Frenzy - The attack speed of nearby allies is increased by 20% for 6 seconds. For each enemy killed during this duration, attack speed is further increased by 10%. Maws of Death - Sharku's hungering warg attacks the target for x damage, healing x life. Blood Hunt - Sets loose two warg riders to attack the enemy guardian with the least amount of health.
Treebeard: Call of Entmoot - Treebeard lets out a roar which slows the movement and attack speed of nearby enemies. Ent Draught - Instantly heal Treebeard for x and periodically heals nearby allies for a smaller amount over 8 seconds. Hurl Boulder - Toss a massive boulder towards an enemy guardian, which also causes area of effect damage to surrounding units. Enemy towers within this area receive bonus damage. Stubborn Roots - Treebeard remains immobile for 6 seconds and gains 75% damage resistance.
Also Gimli... ;) Note: You don't have to put the abilities of the guardians you want, just their names...
Bad Guy: "What is that AWFUL smell?!?" Drake: "I told you to put that thing out Sully!"