After levelling 10 levels with 5 sisters I started having a litlle fun with people going 'WTF' when they saw us. keep in mind I am not on a RP server and I guess that is what people find cool with those...

It usually starts with my main going 'Hi, can I help you?' when someone looks at us funny or says something like 'ZOMG BOTS'
to which I have a macro on one of the 4 sisters going ''look how cute that top is...I want one'
The main then goes 'Please be quiet, I am trying to have a conversation here'
then I start talking to the player who asks what is going on. (all these being macros of course)

If someone talks to one of the sisters I have a macro on my main that says: 'I speak for all my sisters...can I help you?'

I have a key that has 3 of them go '/assist /no' and one that goes '/assist /flirt'...making them look like one of them likes the person talking to us. usually the main then goes 'sister X, remember what father told you...no more flirting' to which sister X replies 'I am sorry, it won't happen again'.

I also have 4 sets of macros for general responses
Sister A Yes
Sister B Sure
Sister C of course
Sister D yep

Another one with variations of maybe and another one with no or negatives. That way I can ask a general question to the player or around me and have a fake conversation with the other 4. It really catches people off-guard and that is what I really love about multi-boxing at the moment...the interaction with people looking at us funny.

and if I need all of them to say the same thing I only need to type it once.

I also have the /dance /flex and other emotes macroed.

Still my favorite thing to do is to stop when they follow and someone look at us funny, then spread them out in diamond formation, then do the opposite of that formation, then cast a buff/shield spell then /dance then /point to the person and /lol. it is a bit over the top but I love pretending they are actually a mix between real people behind and clones.

That's just my quick experience after 5 hours playing yesterday, next step level 12