Figlet

Spectre.Console can render FIGlet text by using the FigletText class.

Default font

AnsiConsole.Write(
    new FigletText("Hello")
        .LeftJustified()
        .Color(Color.Red));

Custom font

var font = FigletFont.Load("starwars.flf");

AnsiConsole.Write(
    new FigletText(font, "Hello")
        .LeftJustified()
        .Color(Color.Red));

References