Give them easy to remember nicknames.
is Phi, Zeta, Pi, Gamma, and Epsilon really that hard to remember?

you decide to give them all nicknames because remembering those symbols are a bit tedious
give them nicknames joe, bill, chuck, and robbie
and also seth
that's such a gr8 name innit

that makes it easier.
Plan on repairing the other broken bots
explain the current situation to them
also take the van

so you have a
strategic talk with your
comrades.
its time to pack up and get out of here. no special reason, its just theres a lack of people to advertise to in the area. always gotta be looking for new consumers you know?
the van will be perfect for this.
no one but
beta bot has any idea how to repair your
wounded comrades, but he'll need a stable place and tools and all that. as opposed to in the neon-lit dirt.
your group consists of
you,
beta bot, the wounded
alpha bot,
theta bot,
tau bot,
delta bot, and your new comrades
joe,
bill,
chuck,
robbie, and
seth.