the curious case of Judas Priest song titles

cheater
ripper
deceiver
sinner
starbreaker
exciter
invader
grinder
steeler
troubleshooter
jawbreaker
turbolover
painkiller
night crawler
devildigger
demonizer
hellrider

To the casual observer, this might seem like a list of things ending in "-er", but to a true metal maniac, it is clearly a list of Judas Priest song titles-all with one thing in common.
At work yesterday, most likely thanks to an Ipod's shuffle mode, I heard Exciter followed up by Invader. Couldn't remember if they were on the same album or not, but thought it was weird. Which was all it took to get the gears of my mind spinning towards some useless record nerd analysis. The results of which are the list above

10% of all Judas Priest Songs end in "-er" 17 out of 167
69 % of non live or greatest hits contain at least one "-er" title. 11/16
28% percent of the songs on the live Unleashed in the East end in "-er"
0% of my childhood favorite Screaming for Vengeance's song titles end in "-er"
4 out of 4 of their 1st 4 lps contain an "-er"
This does not include plurals or phrases like Defenders of the Faith
I also cannot explain the 1997 dalliance with "-or" titles (juggalator and abductor)
I guess that since the singer's nickname was Ripper they felt safe to experiment. It does have a Halfordian precedent in Dissedent Aggressor from 1977's Sin after Sin....

I can be fact checked here

I suppose I could have written a race or non-race report, but variety is the spice of life.

This video does not stand up to the test of time very well

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