It seems that the marvel hero Echo and the Star Wars character Echo have become combined on here.

I think they should be fixed now.

here is a part of the FAQ about reporting an issue with the subject being linked with correct name

The preferred method is to use the inaccuracies reporting box available when browsing a set or a card (see example below). Using these boxes will automatically include tracking information about which set or card is being referenced to help in pinpointing and updating the item more efficiently. Step by step instructions are available in the User Manual.

• How do I report an inaccuracy?

Thanks for the help y'all!

Looks like there is yet a third one in this World of Warcraft (?) set.

Guess that one needs its own PID. The issue before was some of the Marvel cards were connected to the Star Wars one, but the Marvel one already existed.