After you unleashed a deadly physical assault on Piccolo who, momentarily defeated, falls into a crevice in the base. Then Piccolo remembers Shenron's words about "throwing in a bonus" and a sigil alights on his back, his skin turns orange, his antenna stands on end, and he grows bulkier. You were quickly thrownback by the overwhelming Ki he is generating.

"Hmph, Shenron really wasn't kidding about the extra bonus."

He then turns his attention to you and quickly charges at you

"Now, let's settle this!"