That egg-bot ship thing (?) looks quite promising. If you made a mod with Eggman in it, that could work quite the treat, I can tell you that much.
As well, you could also make it shoot missiles or something of that sort.
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Also, with regards to the Red Angry Bird, you could definitely resize that, as you've said. I'm not sure how you could make it move properly, without it sliding along the floor, but I'm sure you can figure it out. Keep up the good work!