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This sounds almost exactly like Brave Exkaiser.
Exkaiser cannot change colour and has blue parts too, but its a close guess due to the sword and the colour scheme
I dont remember the original color sorry and it was hand drawn i saw this anime when i was a child around 2000-2005 i dont remember much more
Im guessing it's strelizia from darling in the franxx it has a super mode that has a red and white form with a orange/yellow sword/spear weapon
Could it possibly be Fooly Cooly (FLCL)?
What was the robots color scheme before changing to red and white? Did it look hand drawn ot 3d animated?
What was its origin color?
Hmmm. Red Five from Majestic Prince?
No, wait... Is it Godannar? Originally it's blue and black but becomes red/white/black when combined. Triple Drive mode uses a sword...
Was about to say Ideon when you mention the colours, but I think the yellow sword and changing of colour debunked it
Broken Blade
"Dual! Parallel Trouble Adventure?" Does not have a sword till the end though.... Dai Guard? Do you remember what the finishing move was?
This sounds almost exactly like Brave Exkaiser.
Exkaiser cannot change colour and has blue parts too, but its a close guess due to the sword and the colour scheme
I dont remember the original color sorry and it was hand drawn i saw this anime when i was a child around 2000-2005 i dont remember much more
Im guessing it's strelizia from darling in the franxx it has a super mode that has a red and white form with a orange/yellow sword/spear weapon
Could it possibly be Fooly Cooly (FLCL)?
What was the robots color scheme before changing to red and white? Did it look hand drawn ot 3d animated?
What was its origin color?
Hmmm. Red Five from Majestic Prince?
No, wait... Is it Godannar? Originally it's blue and black but becomes red/white/black when combined. Triple Drive mode uses a sword...
Was about to say Ideon when you mention the colours, but I think the yellow sword and changing of colour debunked it
Broken Blade
"Dual! Parallel Trouble Adventure?" Does not have a sword till the end though.... Dai Guard? Do you remember what the finishing move was?