You can't help but feel sorry for Scavenger. He wants so badly to be liked and needed, to feel like a useful and valuable member of his team. His self-esteem is so low he'd do just about anything to get the approval of the others, but his simpering, doting eagerness to please just reinforces the other Decepticons' opinion of him as a worthless loser. He's constantly excavating everywhere he goes in the attempt to find something of worth to please everyone and prove his value, but it's invariably just some piece of garbage or scrap he excitedly finds, and that just reinforces their opinion of his worthlessness once again. If it wasn't for his shovel's unique ability to detect needed materials, Megatron and the others would likely have dumped the poor scrub long ago.

He does not have a voice in the series as the Combiner Wars creators decided to have the Combaticons voiced by beeps and boops. As such, anything would do as long as you keep his personality description in mind.