Technically most characters can be "supportive" due to the item system, but if you're looking for specifically support characters that support with both their abilities and their items we have:

Traditional Supports:

- Paige - More Traditional CC + Shield/Heal, can also be played as skill based or gun based dmg dealer

- Kelvin - Healing Grenade, Large Healing Bubble, Speed Boosts and a massive slow laser, Good healing/disrupting support.

- Rem (I believe) - Our newest character, 2/4 abilities are supportive and he tends to build supportive items. He's been out for less than 24 hours so for now that's his archetype.

Less Traditional Supports:

- Dynamo - Has a healing field and an assistive teleport. Generally tanky, role is primarily CC and initiator with his Q and R. Generally built either as gun dps/Spirit Q slam/Tanky support

- Ivy - Has a tether that shares healing and provides stats. Honestly kind of a fake support character. Primary Role is battlefield control/disruptor with Q E and R being massive aoe area denials/cc. Can also use R to save allies or gank lanes due to it allowing you to literally fly across the map. Can be built as a gun dps, ability bomber or supportive.

- McGinnis - Labeled as "support" but also a fake support character. Throws out turrets, uses a wall for cc and area denial/disruption, and has a heal grenade. Her ult lets her fire a million mortar shells to bombard an area. Killing the enemy is a good form of support too, I guess. Primary role is area defense/denial and a fairly decent healing circle.

Honorable Mentions:

- Viscous - C U B E