Inferno: You're no match for me. Burn, traitor, burn.
Blackarachnia: Oh no. You're not saving my life again? after I shot you?
Silverbolt: It is my duty as a Maximal and a heroic character.
Blackarachnia: You know I like 'em big and stupid but you're really pushing it.
Waspinator: Two-head throw Megatron in lava pit! Megatron want slag Two-head. Waspinator down with that.
Rhinox: Is it just me or is our boy particularly happy today?
Rattrap: It's the spider lady that I'm worried about.
Rhinox: What do you mean?
Rattrap: Call me paranoid but I don't trust spiders, I don't trust Predacons, and I don't trust dames who sneak in and out of classified areas when they think that nobody is watching.
Rampage: Ignore the pain. It's only going to get worse.
Blackarachnia: Thanks for coming after me. It was sweet.
Silverbolt: As was the way you confessed the truth to Optimus. Oh we'll make a Maximal out of you yet.
Blackarachnia: In your dreams. I like myself just the way I am and I intend to stay this way. home, rover.
Blackarachnia: Sorry, chunk-style, but I like being a bad girl. And you know something else? Somewhere, deep beneath this squeaky-clean armor plating of yours... I think you like it too. Hmmm?
Tarantulas: Don't cats ever get tired of being stupid?
Megatron: Soon, very soon, I expect a visit from Cybertron.
Rampage: I eagerly anticipate your imminent demise, then.
Chosen answer: Terrorsaur was probably removed because his character was far overshadowed by Tarantulas. Both characters were treacherous and backstabbing towards Megatron, but it wouldn't have made sense to have two characters who served the same purpose, story-wise. Scorponok was removed because they wanted to introduce Quickstrike, and it wouldn't have made sense to have two scorpion characters on the show.