IMO, ill play it in a more Utility point of view, since they are known for that, make use of their bonus as your theme when it comes to Junkz and Sentinels.
Try this out and hope it works for you:
Kawan *4 / Malmoth *4
I would rather play this with Ulu Watu, instead of the Junkz:
: Lewis can be removed for Frank to replace Alexei for Lamar.
Favor Lamar over Eryton in ELO because Lamar can beat the Pussycat clan bonus and stop Nightmare cards from cancelling his clan bonus out.
Beyond that, like the above poster said, using the power trio of Alexei, Striker, and Marina to get two ability stoppers and a 9 power damage blocker fits more punch into your deck than including an All-Stars five drop. You could also do what a ton of people are doing in ELO right now and mixing underleveled Pussycat cards to fit Lamar and two four drop All-Stars into your deck. It's pretty painful to fight.
Why would you play Junkz ?
I like Veenyle, but that's pretty much it really
They don't have real powercards compared to other clans
That's true, but i believe that Malmoth and Kawan can do real damage and are hard to counter with bonuses. Kawan can deal 7 damage and combo him with any of your All Stars, or fo simple with Malmoth for the 6pills for 5 damage, GGs!