Reinforcement is an extremely important part of this game... It and power ups are very crucial to control decks to get you to the 8th or 9th turn.

I do have a clarification question though...

Only support row characters can reinforce.
Reinforcing can only be done orthagonally (up down, left right, not diagonal)
Only readied characters can reinforce...

Now... What if you have no support row characters, and your front row is all that you have... Can they reinforce each other?

No, only support row characters.

And... the characters have to have the same team affiliation.

What if they have no team affiliation?

Does no affliation equal an affiliation?

Can someone with no affiliation reinforce an non affiliated character?

nope, non-affiliated guys can't reinforce or be reinforced, period.

One point of clarification: non-affiliated characters can't reinforce one another. However, they can be reinforced via equipment and plot twists.