"Don't make a promise"
"If you know you can't keep it"
"Forward unto dawn"
"Cairo"
"Covenant"
"IWHBYD" - (Credit to Bolt Ons23)
"A dog beat me over the fence"/ ADBMOTF
"Arby"
"Chief"
"Flood"
"I know what the ladies like"/ IKWTLL
"Goodeye"
"Marty"
"Virgil"
"ODST"
"SPNK-R" - (Credit to Prawncrackers)
"Keep it clean" -(Credit to THC Tango)
"117"
"Tiger"/"Space Tiger"/"Tiger Man"
"Scarab"
"Blame Stosh"
"Urk!"
"Serenity"
"Foman"
"Your mom"
"Coned" - (Credit to Dappert)
"Splat!"
"7" - (Credit to Prawncrackers)
"Oni"
"Myth"
"Forky"
"-Blam!-"
"Forge"
"Johnson"
"Hammer"
"Anvil"
"Foe-hammer"
"Firefly"
"Animal"
"Badassery"
That's all for now.
English
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Too many direct Halo references that might be trademark infringement. I bet there are some you could get away with though.
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They're just some possible options that Bungie could take. I'm not suggesting they use any of them! Just putting out ideas.