The RYNO IV was a ridiculously overpowered game un-balancing, super death ray firing, vaporising weapon. It's size was the ratio of Ratchet:RYNO IV to Teenager:Basketball. It was criticised for being too small compared to how much power it held.
The first time the RYNO was seen on YouTube there were 500,000 comments suggesting that it couldn't be very powerful until the next video 2 weeks later showing what it does with 600,000 mentioning how they couldnt of ever expected that much power.
The RYNO IV could easily destroy Tachyon in mere seconds at its maximum upgrade, pretty much making it the most powerful weapon ever.