That's a idea of a small quest.

Tybalt ask a service to Tux. Of course, Tybalt act differently if Tux is in Red
Guard or if Tux has bribed him. The deal is to get food for Tybalt. Because,
Tybalt want only eat Red Sun food. Tux need find a vending machine (there are
many place what possible to put the vending machine, my first thinking is the
bar) and bring back the food can. Tybalt don't give no reward, but Tux is red
guard member. Otherwise, my idea of reward is ammunition. 

Also, It would be fun to have more reference (easter egg?) to firefly where red
sun is derived from.

Tybalt asking food? Sounds cool. Us can add to vending machines a food canister.
(Just like us add to Ms. Stone shotgun shells when join at RG). The problem is
remove it after the quest is done.

If tux is not of the RG, Tybalt could vote for him in (add town score). 

The idea is that when the quest is completed and Tux gives Tybalt the food, just
like Kevin, Tux can choose his reward: Ammo, money (Badly will cover the food
price, because Tybalt is poor), A Pot Helmet or gratitute (what adds town score).

In latter on, Spencer says "I've heard that you bought to Tybalt a food canister
and didn't charged anything, neither the food price!". If Tux is a RG member,
Spencer says that he must repay tux, and gives tux a good amount of money.
Otherwise, the Town Score increase.

Sounds cool this quest.