Every secret boss is vaguely connected to the following chapter's final boss in some way but like
>ch 1 secret boss
>foreshadows the ch2 final boss Queen by briefly mentioning the return of Queen
>ch 3 secret boss
>technically the Knight who doesn't say anything but they summons the Titan in ch4
>ch4 secret boss
>Gerson summarizes his story which is based on the prophecy and hints at the ch5 final boss being related to jealousy
>ch2 secret boss
>Spamton doesn't shut the fuck up about his ex
>HEY EVERY ! turned out to be Mr "Ant" Tenna's TV Time leitmotif
>Several lines between him and Tenna referencing eachother
>Ch3 optional content alluding to the 2 being former business partners and more
>Straight up pops out of your inventory to talk to Tenna one time
>THE [Tragic businessmen] THAT [Died] AT THE [Now] OF THE [Story]
Why the FUCK is spamtong so greedy?
It's like every secret boss was instructed to foreshadow the next chapter boss. But Spamton took it as an opportunity to go off hinting at how he and Tenna were REALLY close so he could maintain relevance throughout ch3.